item2_tab_color.sh

# ~/.bash_profile
 
function cd {
	# actually change the directory with all args passed to the function
	builtin cd "$@"
 
	auto_set_tab_chrome_background_color;
}
 
function auto_set_tab_chrome_background_color {
	RR=`pwd | wc -m`
	let RR=(RR%25)*10
 
	GG=`basename \`pwd\` | wc -m`
	let GG=(GG%25)*10*2
	
	BB=`ls | wc -l`
	let BB=(BB%25)*10
 
	# start to set background color of tab chrome
	# Documents: http://iterm2.com/documentation-escape-codes.html
	echo -en "\033]6;1;bg;red;brightness;${RR}\a"         # -n: ignore newline 
	echo -en "\033]6;1;bg;green;brightness;${GG}\a" 
	echo -en "\033]6;1;bg;blue;brightness;${BB}\a"
}
 
auto_set_tab_chrome_background_color;