Jay We have an extensive theming system for changing colors and layouts, but we had not thought to add calendar colors into it.
The themeing system IS pretty extensive but there are a handful of other graphic elements besides this one which lack controls and prevent a full, proper, "skinning" of the app. I created a "Grey" theme because I found both Light and Dark too harsh for prolonged use (I sometimes spend all day in Legend). It's almost perfect but there's a few places where the old bones are peeking through because there's simply no control available.
@Jay If you're interested in knocking those out along with this calendar color issue, I can send you a list of the ones I've identified. It's only like 5 of them, I think.
