What I would like: for all windows, I want to have the slider bar a different colour from the slider rail. and visible whether or not it is being hovered over.
So far I have only be able to configure scrollbar colours in themes to one of two modes:
Slider and rail are completely invisible unless hovered over. (Slider and rail are same colour as window background). When slide rail or bar are hovered over, slider becomes visible. ("Default windows themes")
Slider bar and slider rail are the same colour, but have a thin outline. They take their colour from the settings for button background and foreground. (Using "high contrast themes").
Am I missing something? Or do I need to install a skinning app or something?