While looking for a small notebook to keep bank balances in, I found this cute little notebook at Michaels.
My iPhone picture of it does not do justice to the bold colors. The yellow is a bright golden sunshine. The red is fire engine red. The blue is a dark nautical-sort of blue. And the white provides a great way for the colors to be tied together.
I think these colors would be amazing in a little boy's bedroom. Michaels also had small canvases of similar designs, all for only $1! I love the availability of cute, fun design choices that don't break the budget!