Question

It would be nice to be able to assign a color to DCA filter groups.

Answer 1

They are a single color by design.

This is to help identify what the function of that fader / channel is.

If it could be colored, then a user may not know if it's an input channel, a buss, or a DCA.

Answer 2

Seems like that should be up to the end user. In my case, since I can't include an aux or matrix mix in the main mix, I need to create a DCA to include several channels via a single fader into my main ix. That single channel is vocals (as are all the channels in the DCA). On my user layer, I'd like the DCA to be the same color as my other vocal channels. Even if I wanted to know that it was a DCA and not an input channel, the lack of a pan position indicator on the scribble pads indicates that.