Comment 4 for bug 1808913

Yeah, I already activated your account, so it is probably better to move any discussion to IRC or forum, but some quick answers:

1) subtle doesn't set the color of the root window at all, that is the task of other tools.
2) When you move windows around, that isn't ghosting but an outline to mark where the window would be, without forcing the window to render itself multiple times in case of a resize.