We've had to hem and haw every time we picked a wall color (except the guest room where we just matched the existing). Usually, this means we buy like 2 samples, then another 2 and then decide between the four.
The baby's room has been tougher though (notice the pink in the far right too):
However, I think we've actually settled on a Behr color called "Custard Cream". Luckily, Home Depot sells small samples for only $2.94.
Note: Not shown is that we tried the living room color "cornerstone" in here as well. No luck.