And now I decided to tweak buttons a bit more. Specifically, the button sprites I have not already tweaked. They were a bit off, due to my tweaks on the first set. The bigger issue here, however, is that I NOW HAVE TO TWEAK ABOUT 1000 BUTTON-RELATED IMAGES!
Partial list needing changing: Checkbox Normal, Checkbox Selected, Checkbox Mixed, Segmented Selected, Segmented Normal, Select Normal and Select active.
Basically, the selected and active states of any button that has a squarish shape.