List of all colors available?

[naquiroz]

Is there a list or a reference to all the colors I can use to customize the theme?

[jaskij]

Digging through the source code, it seems to be passing the color directly to ZSH, using %F and %K, as described in section 13.2.5 here in the ZSH manual. From there, we get to section 18.7, which, in part, says:

The foreground colour should be set to colour, a decimal integer, the name of one of the eight most widely-supported colours or as a ‘#’ followed by an RGB triplet in hexadecimal format.

From the next paragraph, the basic colors are black, red, green, yellow, blue, magenta, cyan and white