Hi theFRXST,
that's exactly what I had to deal with too, because in my default-mod I made the backgrounds more transparent to see more of the chosen color. This was not a smart decision, cause the readout text became sometimes unreadable.
You can check the rtconfig from my default-mod (it's in my signature).
I copied and modified the color-macro to change from a lighter to a darker color, depending on the brightness of the track color.
I assume, that's what you want to achieve too.
I'm not at my PC right now, so I can't look after details, but I hope, it will help you.
Peter