To recognize better the start and the end of output on a commandline, I want to change the color of my prompt, so that it is visibly different from the programs output. As I
Zsh comes with colored prompts builtin. Try
autoload -U promptinit && promptinit
and then prompt -l lists available prompts, -p fire previews the "fire" prompt, -s fire sets it.
prompt -l
-p fire
-s fire
When you are ready to add a prompt add something like this below the autoload line above:
prompt fade red