such rainbow, wow.

Using oh-my-fish:

omf install lolfish

Download and source the prompt file

curl -L https://github.com/er0/lolfish/raw/master/lol.fish -o $HOME/.config/fish/functions/lol.fish 

• Only the best rainbow xterm colors!
• git branch/status info
• Return value from the last command
• Right prompt displays number of backgrounded jobs, tmux sessions, and the time.