Tenant painted room, I'm scared, sad, what to do?!

I spent a lot of time fixing up a rental, did all the work myself (with a friend), I considered the paint-job a work of art, apparently the tenant didn't think so, he not only primed the walls but also the trim now I'm worried about the colors and if he will do a good job.

Thing about it is: I specifically said in the lease, "no painting"! But his aunt is the one on the lease. I never met him until I had to go there to winterize the house, clean up etc.

I don't want to make a bad situation worse. Here's a pic of the room. If I had to do it over again, I would have painted one or two shades lighter.