Grand Design to Forest River XLR......need advice....

The Reflection in that pic is not painted. Just fiberglass with decals. Most TT's and 5ver's are either grey or white fiberglass with decals. Many of the nicer rigs have it as an option where as most less expensive RV's you can only get unpainted.

On some they have the front end cap painted to make it stand out but keep the sides and rear unpainted to save $.

When you get into high end rigs like Class A diesel pushers, they are more often painted.