Use variable to store color for script output

diagnose

@@ -1,13 +1,15 @@
 #!/usr/bin/env bash
 #
 # This script is for quickly generate helpful info
-#
+# It should be as independent as possible and should not source other files unless it has to
+COLOR_RED='\e[31m'
+COLOR_RESET='\e[00m'
 
 cd "$(dirname "$0")";export base="$(pwd)"
 output_file=diagnose.result;rm $output_file
 export LANG=C;export LC_ALL=C
 case $(whoami) in
-  root)echo -e "\e[31m[$0]: This script is NOT to be executed with sudo or as root. Aborting...\e[0m";exit 1;;
+  root)echo -e "${COLOR_RED}[$0]: This script is NOT to be executed with sudo or as root. Aborting...${COLOR_RESET}";exit 1;;
 esac