When it's time to paint your child's room, you'll probably consult your child for their input. Maybe you'll agree to paint the room in your child's favorite color. While your child's input is important (they'll be the one spending time in the room, after all), don't overlook the importance of color psychology. The color of paint in your child's room can affect her mood -- and sometimes in dramatic ways. Children can actually be extra sensitive to the impact of certain colors.