Yes, I don't know exactly how to fix this but I'll look into it again sometime. Needs a different method of blending/arrangement of layers.. Also happens with Teenage Mutant Ninja Turtles and maybe something else. Cheers.
Edit: If anyone wants to find a fix for those, please do. And any way to better the Spitball Sparky screen. The colours aren't too good. I couldn't find the right way to have both a dulled background and vibrant LCD at the same time
MAME Artwork / Artwork Previews