diff --git a/test/common.sh b/test/common.sh
index 7d09064..f87cc5c 100644
--- a/test/common.sh
+++ b/test/common.sh
@@ -11,3 +11,9 @@ assert_not_ok() {
 
   ! $($FUNCTION $@) || die '"'"$FUNCTION $@"'" should have failed, but succeeded'
 }
+
+strip_colors() {
+  while read -r line; do
+    echo "$line" | LC_ALL=C command sed 's/\[[ -?]*[@-~]//g'
+  done
+}
diff --git "a/test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target" "b/test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target"
index d4a8a2d..8c8bb68 100755
--- "a/test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target"	
+++ "b/test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target"	
@@ -1,6 +1,7 @@
 #!/bin/sh
 
 . ../../../nvm.sh
+. ../../common.sh
 
 die () { echo $@ ; exit 1; }
 
@@ -10,12 +11,14 @@ if [ -n "$ZSH_VERSION" ]; then
   setopt noclobber
 fi
 
-nvm alias test-stable-1 0.0.2
+nvm alias test-stable-1 0.0.2 || die '`nvm alias test-stable-1 0.0.2` failed'
 
-nvm alias test-stable-1 | \grep -e "test-stable-1 -> 0.0.2 (-> v0.0.2)" \
-  || die "nvm alias test-stable-1 0.0.2 did not set test-stable-1 to 0.0.2"
+OUTPUT="$(nvm alias test-stable-1 | strip_colors)"
+EXPECTED_OUTPUT='test-stable-1 -> 0.0.2 (-> v0.0.2)'
+echo "$OUTPUT" | \grep -F "$EXPECTED_OUTPUT" || die "nvm alias test-stable-1 0.0.2 did not set test-stable-1 to 0.0.2: got '$OUTPUT'"
 
-nvm alias test-stable-1 0.0.1
+nvm alias test-stable-1 0.0.1 || die '`nvm alias test-stable-1 0.0.1` failed'
 
-nvm alias test-stable-1 | \grep -e "test-stable-1 -> 0.0.1 (-> v0.0.1)" \
-  || die "nvm alias test-stable-1 0.0.1 did not set test-stable-1 to 0.0.1"
+OUTPUT="$(nvm alias test-stable-1 | strip_colors)"
+EXPECTED_OUTPUT='test-stable-1 -> 0.0.1 (-> v0.0.1)'
+echo "$OUTPUT" | \grep -F "$EXPECTED_OUTPUT" || die "nvm alias test-stable-1 0.0.1 did not set test-stable-1 to 0.0.1: got '$OUTPUT'"
diff --git "a/test/fast/Aliases/Running \"nvm alias\" lists implicit aliases when they do not exist" "b/test/fast/Aliases/Running \"nvm alias\" lists implicit aliases when they do not exist"
index 8fd73d8..2c27ad1 100755
--- "a/test/fast/Aliases/Running \"nvm alias\" lists implicit aliases when they do not exist"	
+++ "b/test/fast/Aliases/Running \"nvm alias\" lists implicit aliases when they do not exist"	
@@ -1,26 +1,27 @@
 #!/bin/sh
 
 . ../../../nvm.sh
+. ../../common.sh
 
 die () { echo $@ ; exit 1; }
 
-NVM_ALIAS_OUTPUT=$(nvm alias)
+NVM_ALIAS_OUTPUT=$(nvm alias | strip_colors)
 
 EXPECTED_STABLE="$(nvm_print_implicit_alias local stable)"
 STABLE_VERSION="$(nvm_version "$EXPECTED_STABLE")"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e "^stable -> $EXPECTED_STABLE (-> $STABLE_VERSION) (default)$" \
-  || die "nvm alias did not contain the default local stable node version"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F "stable -> $EXPECTED_STABLE (-> $STABLE_VERSION) (default)" \
+  || die "nvm alias did not contain the default local stable node version; got '$NVM_ALIAS_OUTPUT'"
 
-echo "$NVM_ALIAS_OUTPUT" | \grep -e "^node -> stable (-> $STABLE_VERSION) (default)$" \
-  || die "nvm alias did not contain the default local stable node version under 'node'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F "node -> stable (-> $STABLE_VERSION) (default)" \
+  || die "nvm alias did not contain the default local stable node version under 'node'; got '$NVM_ALIAS_OUTPUT'"
 
 EXPECTED_UNSTABLE="$(nvm_print_implicit_alias local unstable)"
 UNSTABLE_VERSION="$(nvm_version "$EXPECTED_UNSTABLE")"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e "^unstable -> $EXPECTED_UNSTABLE (-> $UNSTABLE_VERSION) (default)$" \
-  || die "nvm alias did not contain the default local unstable node version"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F "unstable -> $EXPECTED_UNSTABLE (-> $UNSTABLE_VERSION) (default)" \
+  || die "nvm alias did not contain the default local unstable node version; got '$NVM_ALIAS_OUTPUT'"
 
 EXPECTED_IOJS="$(nvm_print_implicit_alias local iojs)"
 IOJS_VERSION="$(nvm_version "$EXPECTED_IOJS")"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e "^iojs -> $EXPECTED_IOJS (-> $IOJS_VERSION) (default)$" \
-  || die "nvm alias did not contain the default local iojs version"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F "iojs -> $EXPECTED_IOJS (-> $IOJS_VERSION) (default)" \
+  || die "nvm alias did not contain the default local iojs version; got '$NVM_ALIAS_OUTPUT'"
 
diff --git "a/test/fast/Aliases/Running \"nvm alias\" lists manual aliases instead of implicit aliases when present" "b/test/fast/Aliases/Running \"nvm alias\" lists manual aliases instead of implicit aliases when present"
index 6c0fa99..45346bd 100755
--- "a/test/fast/Aliases/Running \"nvm alias\" lists manual aliases instead of implicit aliases when present"	
+++ "b/test/fast/Aliases/Running \"nvm alias\" lists manual aliases instead of implicit aliases when present"	
@@ -1,6 +1,7 @@
 #!/bin/sh
 
 . ../../../nvm.sh
+. ../../common.sh
 
 die () { echo $@ ; cleanup ; exit 1; }
 cleanup () {
@@ -31,19 +32,18 @@ nvm alias unstable "$EXPECTED_STABLE"
 nvm alias node stable
 nvm alias iojs unstable
 
-NVM_ALIAS_OUTPUT=$(nvm alias)
+NVM_ALIAS_OUTPUT=$(nvm alias | strip_colors)
 
-echo "$NVM_ALIAS_OUTPUT" | command grep -e "^stable -> $EXPECTED_UNSTABLE (-> $UNSTABLE_VERSION)$" \
-  || die "nvm alias did not contain the overridden 'stable' alias"
+echo "$NVM_ALIAS_OUTPUT" | command grep -F "stable -> $EXPECTED_UNSTABLE (-> $UNSTABLE_VERSION)" \
+  || die "nvm alias did not contain the overridden 'stable' alias; got '$NVM_ALIAS_OUTPUT'"
 
-echo "$NVM_ALIAS_OUTPUT" | command grep -e "^unstable -> $EXPECTED_STABLE (-> $STABLE_VERSION)$" \
-  || die "nvm alias did not contain the overridden 'unstable' alias"
+echo "$NVM_ALIAS_OUTPUT" | command grep -F "unstable -> $EXPECTED_STABLE (-> $STABLE_VERSION)" \
+  || die "nvm alias did not contain the overridden 'unstable' alias; got '$NVM_ALIAS_OUTPUT'"
 
-echo "$NVM_ALIAS_OUTPUT" | command grep -e "^node -> stable (-> $UNSTABLE_VERSION)$" \
-  || die "nvm alias did not contain the overridden 'node' alias"
+echo "$NVM_ALIAS_OUTPUT" | command grep -F "node -> stable (-> $UNSTABLE_VERSION)" \
+  || die "nvm alias did not contain the overridden 'node' alias; got '$NVM_ALIAS_OUTPUT'"
 
-echo "$NVM_ALIAS_OUTPUT" | command grep -e "^iojs -> unstable (-> $STABLE_VERSION)$" \
-  || die "nvm alias did not contain the overridden 'iojs' alias"
+echo "$NVM_ALIAS_OUTPUT" | command grep -F "iojs -> unstable (-> $STABLE_VERSION)" \
+  || die "nvm alias did not contain the overridden 'iojs' alias; got '$NVM_ALIAS_OUTPUT'"
 
 cleanup
-
diff --git "a/test/fast/Aliases/Running \"nvm alias\" should list all aliases." "b/test/fast/Aliases/Running \"nvm alias\" should list all aliases."
index 1a7cac1..1135388 100755
--- "a/test/fast/Aliases/Running \"nvm alias\" should list all aliases."	
+++ "b/test/fast/Aliases/Running \"nvm alias\" should list all aliases."	
@@ -1,48 +1,48 @@
 #!/bin/sh
 
 . ../../../nvm.sh
+. ../../common.sh
 
 die () { echo $@ ; exit 1; }
 
-NVM_ALIAS_OUTPUT=$(nvm alias)
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-1 -> 0.0.1 (-> v0.0.1)$' \
-  || die "did not find test-stable-1 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-2 -> 0.0.2 (-> v0.0.2)$' \
-  || die "did not find test-stable-2 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-3 -> 0.0.3 (-> v0.0.3)$' \
-  || die "did not find test-stable-3 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-4 -> 0.0.4 (-> v0.0.4)$' \
-  || die "did not find test-stable-4 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-5 -> 0.0.5 (-> v0.0.5)$' \
-  || die "did not find test-stable-5 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-6 -> 0.0.6 (-> v0.0.6)$' \
-  || die "did not find test-stable-6 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-7 -> 0.0.7 (-> v0.0.7)$' \
-  || die "did not find test-stable-7 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-8 -> 0.0.8 (-> v0.0.8)$' \
-  || die "did not find test-stable-8 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-9 -> 0.0.9 (-> v0.0.9)$' \
-  || die "did not find test-stable-9 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-stable-10 -> 0.0.10 (-> v0.0.10)$' \
-  || die "did not find test-stable-10 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-1 -> 0.1.1 (-> v0.1.1)$' \
-  || die "did not find test-unstable-1 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-2 -> 0.1.2 (-> v0.1.2)$' \
-  || die "did not find test-unstable-2 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-3 -> 0.1.3 (-> v0.1.3)$' \
-  || die "did not find test-unstable-3 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-4 -> 0.1.4 (-> v0.1.4)$' \
-  || die "did not find test-unstable-4 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-5 -> 0.1.5 (-> v0.1.5)$' \
-  || die "did not find test-unstable-5 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-6 -> 0.1.6 (-> v0.1.6)$' \
-  || die "did not find test-unstable-6 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-7 -> 0.1.7 (-> v0.1.7)$' \
-  || die "did not find test-unstable-7 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-8 -> 0.1.8 (-> v0.1.8)$' \
-  || die "did not find test-unstable-8 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-9 -> 0.1.9 (-> v0.1.9)$' \
-  || die "did not find test-unstable-9 alias"
-echo "$NVM_ALIAS_OUTPUT" | \grep -e '^test-unstable-10 -> 0.1.10 (-> v0.1.10)$' \
-  || die "did not find test-unstable-10 alias"
-
+NVM_ALIAS_OUTPUT="$(nvm alias | strip_colors)"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-1 -> 0.0.1 (-> v0.0.1)' \
+  || die "did not find test-stable-1 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-2 -> 0.0.2 (-> v0.0.2)' \
+  || die "did not find test-stable-2 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-3 -> 0.0.3 (-> v0.0.3)' \
+  || die "did not find test-stable-3 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-4 -> 0.0.4 (-> v0.0.4)' \
+  || die "did not find test-stable-4 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-5 -> 0.0.5 (-> v0.0.5)' \
+  || die "did not find test-stable-5 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-6 -> 0.0.6 (-> v0.0.6)' \
+  || die "did not find test-stable-6 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-7 -> 0.0.7 (-> v0.0.7)' \
+  || die "did not find test-stable-7 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-8 -> 0.0.8 (-> v0.0.8)' \
+  || die "did not find test-stable-8 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-9 -> 0.0.9 (-> v0.0.9)' \
+  || die "did not find test-stable-9 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-stable-10 -> 0.0.10 (-> v0.0.10)' \
+  || die "did not find test-stable-10 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-1 -> 0.1.1 (-> v0.1.1)' \
+  || die "did not find test-unstable-1 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-2 -> 0.1.2 (-> v0.1.2)' \
+  || die "did not find test-unstable-2 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-3 -> 0.1.3 (-> v0.1.3)' \
+  || die "did not find test-unstable-3 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-4 -> 0.1.4 (-> v0.1.4)' \
+  || die "did not find test-unstable-4 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-5 -> 0.1.5 (-> v0.1.5)' \
+  || die "did not find test-unstable-5 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-6 -> 0.1.6 (-> v0.1.6)' \
+  || die "did not find test-unstable-6 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-7 -> 0.1.7 (-> v0.1.7)' \
+  || die "did not find test-unstable-7 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-8 -> 0.1.8 (-> v0.1.8)' \
+  || die "did not find test-unstable-8 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-9 -> 0.1.9 (-> v0.1.9)' \
+  || die "did not find test-unstable-9 alias; got '$NVM_ALIAS_OUTPUT'"
+echo "$NVM_ALIAS_OUTPUT" | \grep -F 'test-unstable-10 -> 0.1.10 (-> v0.1.10)' \
+  || die "did not find test-unstable-10 alias; got '$NVM_ALIAS_OUTPUT'"
diff --git a/test/fast/Aliases/circular/nvm_resolve_alias b/test/fast/Aliases/circular/nvm_resolve_alias
index 4b5dab9..e481826 100755
--- a/test/fast/Aliases/circular/nvm_resolve_alias
+++ b/test/fast/Aliases/circular/nvm_resolve_alias
@@ -1,36 +1,36 @@
 #!/bin/sh
+. ../../../common.sh
 
 die () { echo $@ ; exit 1; }
 
 . ../../../../nvm.sh
 
-ALIAS="$(nvm_resolve_alias loopback)"
+ALIAS="$(nvm_resolve_alias loopback | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_alias loopback was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias loopback)"
+OUTPUT="$(nvm alias loopback | strip_colors)"
 EXPECTED_OUTPUT="loopback -> loopback (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias loopback was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_alias one)"
+ALIAS="$(nvm_resolve_alias one | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_alias one was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias one)"
+OUTPUT="$(nvm alias one | strip_colors)"
 EXPECTED_OUTPUT="one -> two (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias one was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_alias two)"
+ALIAS="$(nvm_resolve_alias two | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_alias two was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias two)"
+OUTPUT="$(nvm alias two | strip_colors)"
 EXPECTED_OUTPUT="two -> three (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias two was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_alias three)"
+ALIAS="$(nvm_resolve_alias three | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_alias three was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias three)"
+OUTPUT="$(nvm alias three | strip_colors)"
 EXPECTED_OUTPUT="three -> one (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias three was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_alias four)"
+ALIAS="$(nvm_resolve_alias four | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_alias four was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias four)"
+OUTPUT="$(nvm alias four | strip_colors)"
 EXPECTED_OUTPUT="four -> two (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias four was not $EXPECTED_OUTPUT; got $OUTPUT"
-
diff --git a/test/fast/Aliases/circular/nvm_resolve_local_alias b/test/fast/Aliases/circular/nvm_resolve_local_alias
index 1d25054..dace4d0 100755
--- a/test/fast/Aliases/circular/nvm_resolve_local_alias
+++ b/test/fast/Aliases/circular/nvm_resolve_local_alias
@@ -1,36 +1,36 @@
 #!/bin/sh
+. ../../../common.sh
 
 die () { echo $@ ; exit 1; }
 
 . ../../../../nvm.sh
 
-ALIAS="$(nvm_resolve_local_alias loopback)"
+ALIAS="$(nvm_resolve_local_alias loopback | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_local_alias loopback was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias loopback)"
+OUTPUT="$(nvm alias loopback | strip_colors)"
 EXPECTED_OUTPUT="loopback -> loopback (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias loopback was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_local_alias one)"
+ALIAS="$(nvm_resolve_local_alias one | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_local_alias one was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias one)"
+OUTPUT="$(nvm alias one | strip_colors)"
 EXPECTED_OUTPUT="one -> two (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias one was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_local_alias two)"
+ALIAS="$(nvm_resolve_local_alias two | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_local_alias two was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias two)"
+OUTPUT="$(nvm alias two | strip_colors)"
 EXPECTED_OUTPUT="two -> three (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias two was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_local_alias three)"
+ALIAS="$(nvm_resolve_local_alias three | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_local_alias three was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias three)"
+OUTPUT="$(nvm alias three | strip_colors)"
 EXPECTED_OUTPUT="three -> one (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias three was not $EXPECTED_OUTPUT; got $OUTPUT"
 
-ALIAS="$(nvm_resolve_local_alias four)"
+ALIAS="$(nvm_resolve_local_alias four | strip_colors)"
 [ "_$ALIAS" = "_∞" ] || die "nvm_resolve_local_alias four was not ∞; got $ALIAS"
-OUTPUT="$(nvm alias four)"
+OUTPUT="$(nvm alias four | strip_colors)"
 EXPECTED_OUTPUT="four -> two (-> ∞)"
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "nvm alias four was not $EXPECTED_OUTPUT; got $OUTPUT"
-
diff --git a/test/fast/Unit tests/nvm_print_alias_path b/test/fast/Unit tests/nvm_print_alias_path
index 1711ead..14f439a 100755
--- a/test/fast/Unit tests/nvm_print_alias_path	
+++ b/test/fast/Unit tests/nvm_print_alias_path	
@@ -1,4 +1,5 @@
 #!/bin/sh
+. ../../common.sh
 
 die () { echo $@ ; cleanup ; exit 1; }
 
@@ -22,7 +23,7 @@ nvm_alias() {
   echo ''
 }
 
-OUTPUT="$(nvm_print_alias_path "$NVM_ALIAS_DIR" foo)"
+OUTPUT="$(nvm_print_alias_path "$NVM_ALIAS_DIR" foo | strip_colors)"
 EXPECTED_OUTPUT=''
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "'nvm_print_alias_path \"\$NVM_ALIAS_DIR\" foo' should produce no output when nvm_alias does not; got '$OUTPUT'"
 
@@ -36,7 +37,7 @@ nvm_version() {
   echo "v$1"
 }
 
-OUTPUT="$(nvm_print_alias_path "$NVM_ALIAS_DIR" "$NVM_ALIAS_DIR/blah")"
+OUTPUT="$(nvm_print_alias_path "$NVM_ALIAS_DIR" "$NVM_ALIAS_DIR/blah" | strip_colors)"
 EXPECTED_OUTPUT='blah -> "blah" (-> v"blah")'
 [ "$OUTPUT" = "$EXPECTED_OUTPUT" ] || die "'nvm_print_alias_path \"\$NVM_ALIAS_DIR\" \"\$NVM_ALIAS_DIR/blah\"' should strip alias dir and print nvm_alias output; got '$OUTPUT', expected '$EXPECTED_OUTPUT'"
 
diff --git a/test/fast/Unit tests/nvm_print_default_alias b/test/fast/Unit tests/nvm_print_default_alias
index 932c1aa..a2e0e55 100755
--- a/test/fast/Unit tests/nvm_print_default_alias	
+++ b/test/fast/Unit tests/nvm_print_default_alias	
@@ -1,4 +1,5 @@
 #!/bin/sh
+. ../../common.sh
 
 die () { echo $@ ; cleanup ; exit 1; }
 
@@ -12,7 +13,7 @@ nvm_print_implicit_alias() {
   echo ''
 }
 
-OUTPUT="$(nvm_print_default_alias foo)"
+OUTPUT="$(nvm_print_default_alias foo | strip_colors)"
 EXPECTED_OUTPUT=''
 [ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] || die "'nvm_print_default_alias foo' should produce no output when nvm_print_implicit_alias does not; got '$OUTPUT'"
 
@@ -26,7 +27,7 @@ nvm_version() {
   echo "v$1"
 }
 
-OUTPUT="$(nvm_print_default_alias blah)"
+OUTPUT="$(nvm_print_default_alias blah | strip_colors)"
 EXPECTED_OUTPUT='blah -> "local-blah" (-> v"local-blah") (default)'
 [ "$OUTPUT" = "$EXPECTED_OUTPUT" ] || die "'nvm_print_default_alias blah' should strip alias dir and print nvm_print_implicit_alias output; got '$OUTPUT', expected '$EXPECTED_OUTPUT'"
 
diff --git a/test/sourcing/Sourcing nvm.sh should use the default if available b/test/sourcing/Sourcing nvm.sh should use the default if available
index 57cb839..03b2fe3 100755
--- a/test/sourcing/Sourcing nvm.sh should use the default if available	
+++ b/test/sourcing/Sourcing nvm.sh should use the default if available	
@@ -5,13 +5,14 @@ die () { echo $@ ; exit 1; }
 echo '0.10.1' > ../../alias/default || die 'creation of default alias failed'
 
 . ../../nvm.sh || die 'sourcing returned nonzero exit code'
+. ../common.sh
 
-NVM_LS_CURRENT="$(nvm ls current | \grep -o v0.10.1)"
+NVM_LS_CURRENT="$(nvm ls current | strip_colors | \grep -o v0.10.1)"
 [ "_$NVM_LS_CURRENT" = '_v0.10.1' ] || die "'nvm ls current' did not return '-> v0.10.1', got '$NVM_LS_CURRENT'"
 
 # NVM_LS_CURRENT_COLORED="$(nvm ls current | sed -n l)"
 
-NVM_ALIAS_DEFAULT="$(nvm alias default)"
+NVM_ALIAS_DEFAULT="$(nvm alias default | strip_colors)"
 [ "_$NVM_ALIAS_DEFAULT" = "_default -> 0.10.1 (-> v0.10.1)" ] \
   || die "'nvm alias default did not return 'default -> 0.10.1 (-> v0.10.1)', got '$NVM_ALIAS_DEFAULT'"
 
diff --git a/test/sourcing/Sourcing nvm.sh with --install should install the default b/test/sourcing/Sourcing nvm.sh with --install should install the default
index e25ddf0..3b6fbaf 100755
--- a/test/sourcing/Sourcing nvm.sh with --install should install the default	
+++ b/test/sourcing/Sourcing nvm.sh with --install should install the default	
@@ -1,4 +1,5 @@
 #!/bin/sh
+. ../common.sh
 
 die () { echo $@ ; exit 1; }
 supports_source_options () {
@@ -23,10 +24,10 @@ nvm_version 0.10.2 >/dev/null 2>&1 || die "v0.10.2 not installed: $(nvm ls)"
 
 [ "_$EXIT_CODE" = "_0" ] || die "sourcing returned nonzero exit code: $EXIT_CODE"
 
-NVM_LS_CURRENT="$(nvm ls current | \grep -o v0.10.2)"
+NVM_LS_CURRENT="$(nvm ls current | strip_colors | command grep -o v0.10.2)"
 [ "_$NVM_LS_CURRENT" = '_v0.10.2' ] || die "'nvm ls current' did not return '-> v0.10.2', got '$NVM_LS_CURRENT'"
 
-NVM_ALIAS_DEFAULT="$(nvm alias default)"
+NVM_ALIAS_DEFAULT="$(nvm alias default | strip_colors)"
 [ "_$NVM_ALIAS_DEFAULT" = "_default -> 0.10.2 (-> v0.10.2)" ] \
   || die "'nvm alias default did not return 'default -> 0.10.2 (-> v0.10.2)', got '$NVM_ALIAS_DEFAULT'"