Can anyone tell me why these mons are different colors? I’m a poke dummy
Simply other variants. I think there are two besides the normal form. They’re quite rare. I saw them as shadows, but I didn’t care so much to go there and catch them :D
I am talking from memory but I think
Yellow, red and blue hey are regional while orange and white appear everywhere but are rarer than whatever color corresponds to your region (yellow in your case).
As usual to get the other colors your choices are
Notice: only the first and 4th options are fully legal according to Niantic rules.