I want to use the colors like:
COLOR_LIGHTGREEN='\[\e[38;5;120m\]'
COLOR_SKYBLUE='\[\e[38;5;111m\]'
COLOR_LIGHTPINK='\[\e[0;95m\]'
First check the number of colors supported by your terminal using echotc Co. If it succeeds you could change the colors using name or numeric color codes for xterm-256-colors.

For more information, See Zsh colors on Arch and character highlighting in Zsh line editor
Thanks!
Most helpful comment
First check the number of colors supported by your terminal using
echotc Co. If it succeeds you could change the colors using name or numeric color codes for xterm-256-colors.For more information, See Zsh colors on Arch and character highlighting in Zsh line editor