We chose the interior color to be gel coat FRP gloss white, and the Expedition exterior to be a very light gel coat FRP grey (RAL 7047). The Expedition light grey has the appearance of bare aluminum. The FRP coating is highly compatible for painting or a vinyl wrap. We do caution with dark colors as this increases UV heat absorption, which can increase the heat inside your unit (thermal efficiency loss). Over time, this could also reduce the life of your adhesives (excessive heat reduces the life of adhesives), which is not specific to Globe Trekker used adhesives, but a common issue with adhesives in general. Anodized aluminum also helps promote paint and vinyl wrap adhesion, so go ahead! It will not void your Globe Trekker warranty.