You wanna make your prompt colorful for git

color_my_prompt

function color_my_prompt {
    local __user_and_host="\[\033[01;32m\]\u@\h"
    local __cur_location="\[\033[01;34m\]\w"
    local __git_branch_color="\[\033[31m\]"
    local __ruby_color="\[\033[35m\]"
    local __ruby_version='`ruby -v | sed -E  s/^\\\\\*\ \(.+\)$/\(\\\\\1\)\ /`'
    local __git_branch='`git branch 2> /dev/null | grep -e ^* | sed -E  s/^\\\\\*\ \(.+\)$/\(\\\\\1\)\ /`'
    local __prompt_tail="\[\033[01;34m\]$"
    local __last_color="\[\033[00m\]"
    #export PS1="$__user_and_host $__cur_location $__ruby_color$__ruby_version $__prompt_tail$__last_color "
    export PS1="$__user_and_host $__cur_location $__git_branch_color$__git_branch$__prompt_tail$__last_color "
}

color_my_prompt

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In ~/.bashrc, Add above lines into bottom of the file.