p9k-theme-pastel is a theme for the powerlevel10k prompt that puts an emphasis on simplicity while still getting important information across.
This project requires Powerlevel10k. Install that first, then follow the instructions below for your plugin manager of choice.
Add zinit light iboyperson/p9k-theme-pastel to ~/.zshrc.
p9k-theme-pastel does its best to keep things compatible by changing characters used when no DISPLAY environemnt variable is present.
For colors to work properly however you will need to ensure your term supports 256 colors.
This can be done with something like this in .zlogin:
if (( ! $? && ${term_colors:-0} < 256 )); then
TERM="xterm-256color"
fi