--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/docs/test-colors.sh	Fri Sep 12 21:14:50 2014 +0900
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# updated version from http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x329.html
+# credit on the page is given to Daniel Crisman
+
+T='gYw'  # The test text
+
+echo -e \
+'\n                 40m     41m     42m     43m     44m     45m     46m     47m'
+
+for FGs in '    m' '   1m' \
+           '  30m' '  90m' '1;30m' '1;90m' '  31m' '  91m' '1;31m' '1;91m' \
+           '  32m' '  92m' '1;32m' '1;92m' '  33m' '  93m' '1;33m' '1;93m' \
+           '  34m' '  94m' '1;34m' '1;94m' '  35m' '  95m' '1;35m' '1;95m' \
+           '  36m' '  96m' '1;36m' '1;96m' '  37m' '  97m' '1;37m' '1;97m'; do
+    FG=${FGs// /}
+    echo -en " $FGs \033[$FG  $T  "
+    for BG in 40m 41m 42m 43m 44m 45m 46m 47m; do
+        echo -en "$EINS \033[$FG\033[$BG  $T  \033[0m"
+    done
+    echo
+done
+echo