So Maxx is 12 weeks old, he has a nice bright red lower chest, has some pink on his upper body, some red over his beak and a bit of red on his cheeks. Is this the color he will stay? When do they stop coloring up. I have seen some very young yellow sided's who had lots of red on their cheeks and upper body. Will Maxx color up more? He is quite adorable as he is, I was just wondering if they change much as they mature. His colors now.