Hello
when I working with Synthx, the GUI is too not for eyes. The color lights inside knobs are barely visible, also I am not allways sure for first time what belongs to A and B synth, when knobs are in default. Isn’t will be better to paint frames to A and B color instead knobs and lights? It will be much more recognisable with that design. I provide a picture what I mean.
(it doesn’t have to be exactly like this when knobs and buttons are affected with color, but the main things are the rectangles. Also slightly color inside rectangle can help)
