Git Log in colors

This is just a copy/paste with tiny modification of (this coderwall post)[https://coderwall.com/p/euwpig/a-better-git-log]

git config --global alias.lg "log --graph --pretty=format:'%C(bold red)%h%Creset -%C(bold magenta)%d%Creset %s %C(bold green)(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit"