So we've decided to paint our boys bedrooms for their birthdays--whatever colors their little hearts desire. My youngest (9) decided on neon green and neon yellow. The plan was the green on the bottom half and the yellow on the top half if the wall with a dark grey zigzag in the middle separating the two colors...until we went and assessed his room.

He has the attic bedroom, so four-foot walls, and then six-foot sloping ceilings with a popcorn finish. Now I am at a loss as to how to go about painting the wall the colors he wants without the white popcorn ceilings standing out like a sore thumb. I've considered painting the ceiling, or taking the popcorn finish off and then painting it, but I don't know what would look best. Any advice, ideas, or input is greatly appreciated!