I've just finished an interface mod which can be checked here: http://toawstuff.000webhostapp.com
It seems there is no way to change the aspect of a wide button when hovering over it. The square buttons have a specific file for it. The wide buttons png files have two variants on each button, but just one variant seems to be used all the time. It is strange to hover over a button or click on it without any visible change. Does someone know if there is a way to change a wide button when hovering over it?
BUG REPORT: since we're at it, I noticed, while making the mod, that, sometimes, the graphical change, when hovering over a square button, doesn't display and, sometimes, when leaving the button, it sticks. There is also a problem with the intro/scenario selection screen: if we minimize the window and maximize it again, the screen doesn't shift to the center and all the buttons coordinates get messed up.