Heya, this is just a suggestion... I love the way the lights on the side of Wily's ship change color in your gif
If you wanted to implement this, instead of redoing all your animations which would be a huge undertaking and would have choppy results when changing animations, you could instead color separate all the sprites so every 2 squares are each slightly different colors, and every 3rd square is the brighter color (you'll need 3x the color slots for the lights that you are currently using).
Then, duplicate all your existing Pals so you have 3 sets, and change the group number on the duplicate sets. Example: 1,1 - 1,10 (set 1) // 2,1 - 2,10 (set 2) // 3,1 - 3,10 (set 3). Adjust each pal, swapping the colors for the side lights - otherwise, the pals are identical.
Finally, use "RemapPal" controllers in State -2, something like this:
Spoiler: RemapPals in State -2 (click to see content)