Brown painted 1/2” Masonite sheet with black steel strips on the deck. Body colour is always there on the exposed metal inside the tonneau, under various supplementary finishes, the most popular in my experience being the grey salt and pepper fleck.
Thanks for the heads up. I'll see what I can find but will probably opt for stainless as opposed to black steel. I haven't found masonite available 1/2 inch think so may have to use an A grade ply and use a router to embed some SS flat bar just proud of the surface. Maybe 25 x 3mm SS strips with countersunk SS screws.
Cheers n Beers
Craig