export PS1="\[\e[31m\]\u\[\e[m\]\[\e[31m\]@\[\e[m\]\[\e[31m\]\h\[\e[m\]\[\e[31m\]:\[\e[m\]\[\e[31m\]\W\[\e[m\] "
Orange
export PS1="\[\e[33m\]\u\[\e[m\]\[\e[33m\]@\[\e[m\]\[\e[33m\]\h\[\e[m\]\[\e[33m\]:\[\e[m\]\[\e[33m\]\W\[\e[m\] "
Green
export PS1="\[\e[32m\]\u\[\e[m\]\[\e[32m\]@\[\e[m\]\[\e[32m\]\h\[\e[m\]\[\e[32m\]:\[\e[m\]\[\e[32m\]\W\[\e[m\] "
As always you can tailor them if you prefer different things to be different colors, I'm often lazy and don't change local machines to green but always change staging to orange and production to red.