Question: Do we have to recolor the WHOLE sprite green, or can I get away with small portions of it?
(Example: Coloring Blastoise shell green only)
Question 2: May I use other variants of green to make the contrast of colors work on the sprite?
(Example: Instead of an Arceus that is pure puke green, contrast it with other shadings and lightings of green where texture of colors are different)
Question 3: Can we use OTHER colors with the green, or are we strickly stuck with it?
(Example: Gold & Green Roserade)
Question1: Yes the whole sprite should be colored. White/Black parts can still stay the same color since they are also part of the forum layout.
Question2: You can alter the proposed colors a bit (darker/lighter or brighter/paler). But it should be clear you started from the original serebii.net style-colors.
Question3: Nope, only green! ^^