The front cap on our '12 Dutchmen Denali oxidized and faded very quickly. It was a dark brown gel coat. I tried the various oxidation removers and waxes, but the effort didn't last long and looked even worse later on.
By time I got to addressing the issue with Dutchmen, it was 18 months old and Dutchmen didn't want to play nice. Yes, it was out of warranty, but this was a problem with many Dutchmen owners, of whom some participate on this forum. After several phone calls/emails, etc, plus waiting for winter to pass, we were able to get the front cap redone. Went from the dark brown gelcoat to white automotive paint. After much bickering and arguing, Dutchmen agreed to pay 1/2 the cost - I still contend they should have covered 100%. I did recieve a check about 3 weeks afters submitting the invoice.
All in all a major PITA!! And no longer a Dutchmen fan!! Agree with B.O. only white from here on out. FWIW, the white actually did come out looking nice!
To OP, it seems having the cap re-painted will be your only solution. Best of luck to you and hope it works out for the best.
2004 Ram 3500 Quad 4x4 Cummins w/auto 4.10 Reese w/ slider
2012 Dutchmen Denali 262rlx w/Moutain Package