How do make a custom control blend into a dark mode window?
The default background color of a window <> FillColor in dark mode.
For most controls like listboxes, ContainerControls, you can use
g.clearRect(0, 0, g.width, g.height)
To get the control to blend into the window.
But how do I get the actual color of the window for when I'm painting the background of my own graphics objects that are not directly associated with a window? I want my background to blend into the window. Or am I going about this wrong and have to do some kind of alpha?