You might need 256 bit color support in your various terminal applications like vim, mutt, mplayer, htop and others. Below are the instructions to enable 256 bit color support.
Pretty quick, issue command in your terminal
$ export TERM=xterm-256color
To make it permanant, add the same to your .bashrc or .zshrc file, according to the shell you’re using.
Test the output with
(x=`tput op` y=`printf %76s`;for i in {0..256};do o=00$i;echo -e ${o:${#o}-3:3} `tput setaf $i;tput setab $i`${y// /=}$x;done)
That’s it, enjoy colors !