I've decided to give Zsh a try, and needed to configure the prompt. For the good of the world, I'm posting a few screenshots of themes packaged with Zsh on, just to be complete, a white and a black background.
You can get a list of available prompts by using
prompt -l. To enable a prompt, for example
adam1, simply type
prompt adam1. The list I've got in version 5.0.0 of zsh is: adam1 adam2 bart bigfade clint elite2 elite fade fire off oliver pws redhat suse walters zefram. You can also get a preview of the prompts using the command
prompt -p. However, because this does not show the bavior in a
git repo, I decided to make screenshots for the default prompts that show of that behavior.
Hope this helps you in choosing a prompt. If not, you can always just dive into the syntax and edit your own prompt.