First of all, a couple of blush kids' rooms that feel colorful and cozy without being too girly ( I don't know the actual colors on these walls, but just as examples where the decor is unisex. The thing remember is that the kids' stuff is going to be colorful, so I don't want to overwhelm the walls).
#1. Tissue Pink
Tissue pink in a room. Thought to be universally flattering and calming.
#2. Wild Aster
This is definitel leaning more girly, but can be balanced out with decor I think.