Using blue paint would be an easy way to find handicapped parking, I agree. I wonder if the color of paint used for public places like parking lots is determined by the state/local government?

Do you sometimes have a hard time finding parking? 

I guess California is different than other states.

Yellow = Loading Zone

Blue = Handicapped Parking

Red = Fire Lane - NO Parking

And, for color blind/busy people, every handicap parking space is individually labeled with a SIGN, warning people to not park, unless they have a handicapped placard displayed hanging from their rear view mirror.