Blissey's odd coloration
So... With the new update, Blissey's colors seem to have changed a tiny bit. Check the link below and then the picture. The link shows "old" Blissey while the picture shows "current" Blissey.
"Old" Blissey seems to have a slightly darker pink upper body, arms, feet and egg pouch, along with a much whiter lower body. "Current" Blissey almost looks like she has a light pink "skirt" instead of pure white. She seems to be the only Pokémon with a noticeable color change!
(If it was the lighting, then shouldn't her lower body be closer to a black color, because shadows and whatnot, instead of pink?)
https://vignette.wikia.nocookie.net/pokemongo/images/2/26/Blissey_Pokedex.png/revision/latest?cb=20180228091308

Answers
That's really odd! Chansey's darker but Blissey is lighter? I thought Niantic might've changed some Pokémon's coloration to better distinguish them from their shiny counterparts, thanks to the leak that revealed all of them are in the game's data already, but Blissey becoming lighter makes no sense, since her shiny also becomes lighter.
Yes, the last Eevee I caught was really pale, almost white, kind of a cream color. Then when I evolved it to an Espeon, the light purple color came out greenish. C'mon, Niantic, I don't know what anything looks like anymore. Just be consistent with colors, ....
(Sarcasm alert for the humor impaired.)
But it's not like the sprites for the game are taking up tons of memory. They can take a bit to load - try opening up your pokedex and scroll down to the bottom immediately - it will be several seconds before Rayquaza appears. But phones today have way more memory than they need for this. It might be for some simplification in the animation, though.