I used to be a Property Manager in California. There is a law on the books which denotes, "normal wear and tear", after a year of residency. A lot of people are not aware of this law which is prevalent in most states.

It is at the expense of the owner to repaint after a year. If you had permission from management to paint another color it would still fall on the owner to repaint to their liking, after residency for a year or more.

This sounds like a small claims court case to me if they force you to repaint. Keep all receipts and record time spent. You will be glad you did.