The transparency doesn't work indeed.
Is it possible to change how long pressed keys work? Now it's triggers on a button release, but it would be nice to have an option to make it on press + timeout. This way "Gravity Box" module works when you turn on that function for switching tracks with long pressed buttons when your screen is off.
It's easier this way to figure that you've hold a button long enough, because you see the result and then release. What we have now is holding a button intuitively which makes you guess: maybe it's e enough, maybe not (you'll know after release).
Thanks for reading my suggestion.