I added Dr Light for a reason just to fix whatever's wrong with Cain, following about toying with bits of Hydra Armor X, so how much does it has now in Zan's eyes, but I count 13. I also added another set which I'll remove if people decide to use the 13 colored one.
19c on the original HydraX at the top, 18c on the new bottom left one.
Thing is, there's 6 frames for each, but only one has 13c; the one with the eyes closed. As X opens his eyes, he gains more colors and as he starts talking even more, breaking the limit. These are all colors that are very hard to spot manually, but are there.
Likewise with Cain's mug. Every white pixel that is not in the beard uses a completely different shade of white. Totalling 8 redundant shades of white aside from the one in the beard.
If you're having trouble with this, I could show you what programs make the palette out to be and give you the fix.