Front plastic trim pieces changing colour!!!

[MinnieKJB]

Has anyone with a Winnebago Vista have the trim on the front of your RV change to a ugly brown colour and have you talked to Winnebago about it. Don't no why they are not made of fibreglass like the ones going down on the sides of the windshield.

[WinnieView]

There are a few "color-back" products on the market, have you tried any of those?
We do not have any personal experience or recommendation.

[BobC]

I'm not sure what trim you mean and if it's removable but somewhere I saw a posting where this method was used on a MH:

How to Clean & Whiten Yellowed Plastics | RetroFixes