Both my sons had their little nails painted around that age, the older one is almost 6 now, he's built like a viking, all muscle, but he's very sweet and so much like me. He's a momma's boy, when you want. He likes to try on his sisters dresses and has a pink drinking bottle. It was mine, I think it's more important for him than the color. Little son is almost 2, he's a wild boy, just like Sasha's Goblin. The plays with the older boys in the daycare by choice, but had glittery nail polish, because he thinks it's pretty and he wants to be pretty. He has long wavy blond hair and is often mistaken for a little girl. I can only say what the others said already: your son is young, he'll figure it out in time. Don't let society pressure him in either way, y'all will be fine.