mac or linux
https://github.com/so-fancy/diff-so-fancy
# cd /usr/local/bin
wget https://raw.githubusercontent.com/so-fancy/diff-so-fancy/master/third_party/build_fatpack/diff-so-fancy
#chmod 777 /usr/local/bin/diff-so-fancy
git config --global core.pager "diff-so-fancy | less --tabs=4 -RFX"
git config --global color.ui true
git config --global color.diff-highlight.oldNormal "red bold"
git config --global color.diff-highlight.oldHighlight "red bold 52"
git config --global color.diff-highlight.newNormal "green bold"
git config --global color.diff-highlight.newHighlight "green bold 22"
git config --global color.diff.meta "yellow"
git config --global color.diff.frag "magenta bold"
git config --global color.diff.commit "yellow bold"
git config --global color.diff.old "red bold"
git config --global color.diff.new "green bold"
git config --global color.diff.whitespace "red reverse"