I have been experimenting with using a blurred album cover to give the panel colours some texture. It can look really good, but to get it working well across many album covers in terms of the panel controls showing clearly means i need to flatten the blur to the point that its hardly worth doing for the normal narrow type player panel.
Additionally if MB detects the contrast for the player controls is not strong enough, it will just use a solid background colour.
I have widened the panel colour range - it still orients toward dark colours but better than before
Based on feedback, i might remove the blur effect