Tamara from Provident Home Design did a major overhaul on her 8 and 6 year old boys bedroom. Previously is was a blue gray, and now it is painted Behr Dolphin Fin (main walls) and Sherwin Williams Dovetail (darker accent wall).
She also has a great tutorial on how she made the headboards. And those lights above the headboards? A total steal! Go check it out!
Looking for similar paint colors? You might like these (click the image to see full size):