Checked all of the posts that I could, trying and find kinds that I can actually use.
MUSHclient color is a built-in feature of MUSHclient. What is it that you're trying to do with it? I keep mine very very simple. Old-style in reverse, like a book. Off-white background, off-black text. No highlights at all. That's how I read a book, and that's how I like to read text on my computer monitor.
on this page is a plugin for combat highlights for mushclient (http://robertpateii.github.io/armageddon-plugins/)