Home Depot only had Charcoal, Blue, and Green.
Remember, road dirt and crap will stain anything. I have seen it make nice red carpets on trailers look nasty.

I have the same question as Insptech....Has anyone tried using those gray recycled plastic 2X4's for bunk replacements? I would think they would be a great replacement as they will never rot and don't hold water. The only concern I would have is are they as stron as the real thing?

Any ideas???

Plastic wood?
 

The Plastic wood you refer to is commonly known as "TREX" and it's made close to home. It is not as stucturally strong as wood- for instance 2x6 decking can only be laid on 16" centers where most codes allow 24" centers for treated pine. The boards also have a slightly convex surface so your hull would not be uniformly supported. I do think it's great for decking, especially if you're in it for the long haul.

A concern I have is with dirt, bird droppings etc. If it gets on a carpeted bunk it will have some give or a place to go beneth it. With these alternative bunks it is held firmly against your gel coat where normal wiggling will allow abrasion.

treated wood should last quite a while for trailer bunks.