I have CT Supers in my IJ and think they look perfect. I had some ghosting issues but didn't once I installed the non ghosting patch. At any rate their non-ghosting supers will fix those few inserts which may ghost. I can send you the patched ROM and you can have someone burn it to a chip.
By far most of the inserts look best with warm whites IMO. I put WWs under the INDY, ADVENTURE, yellow, 5 characters and any of the mode inserts with white in them. That left very few which needed colors. I also used WWs in the backbox. This is one game where you can buy the 100ct bulk purchase and use them all.