Does Rainlendar support $evars$? Seems like I can't get it to work.

Don't think so no

unfortunate, now I'll have to use xtextedit. (Actually quite odd since rainmeter supports them.)

Edit: Nvm, it does support evars, I misread the documentation for Rainlendar - it requires BGR instead of RGB, so I thought that evars weren't being registered. All the colors were just being reversed. odd...

Yep, for some reason rainy has never updated that "feature" of rainlendar.