Okay... I'm gonna weigh in here and say, yes, it IS a particularly bad idea to PAINT the interior of a relatively new CCD pink. It's not the same as doing a much lower-priced vintage trailer in pink.
You've already paid quite a premium for the bare aluminum and other CCD features, and subsequent CCD buyers will be looking for those CCD features. To get paint to stick to the coated aluminum and laminates, they're going to have to be sanded, and primed, if not etched. It's a permanent thing.
I won't go as far as saying it will reduce your resale value, but I will say that it will dramatically shrink your market to those who have the same tastes as you do. It may take you a long time to find a buyer who wants, and is willing to pay, the going price of a relatively new CCD, for a pink trailer. Perhaps Mary Kay would buy it from you to offer as one of their prizes. Your gut instinct tells you that from what I've read in your posts.
Shari has a much better idea, with using pink shades/curtains, linens, and other accessories. You can probably have pink slip covers made for the dinette cushions. Keep all the original stuff so you can put the trailer back to original.