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I'm looking to order a 20 ft long product with a specific color scheme. For the exterior, I'd like to go with a dark night theme, which I envision as a deep and rich tone. As for the interior, I'm thinking a consistent gray color that complements the outside while keeping the overall look sleek and modern. Please provide details on your options for materials, finishes, and any additional features available for this setup. I'd appreciate any suggestions that might enhance the overall design while meeting these color specifications. Looking forward to your reply!