My git config (color part)

.gitconfig

# colour output for diffs
[color]
    ui = auto
[color "branch"]
    current = yellow reverse
    local = yellow
    remote = green
[color "diff"]
    meta = yellow bold
    frag = magenta bold
    old = red bold
    new = green bold
[color "status"]
    added = yellow
    changed = green
    untracked = cyan

#Highlight whitespace in diffs

[color]
    ui = true
[color "diff"]
    whitespace = red reverse
[core]
    whitespace=fix,-indent-with-non-tab,trailing-space,cr-at-eol

README.md

Colors in GIT +++

add these lines to the end of your file.