Custom shop color?


ive seen this in plague modd and in a platformer game by toho where the shop was rainbow
is it a feature that only advanced tier games can have?

ok so i think i figured out how to do it but i dont know how to delete this post

Instead of deleting post your results here so future people with the same question can find their answers.

a month later and idk how to do it, my original thought was you put a line of html in the shop description