bed wood color

[sodly]

I think I know the answer to this question but after searching I can't seem to find it here. Were there any GM plants that produced 60-66 truck beds in body color (rather than black)? I've always thought that black was the only way wooden floor boards came (with black metal strips) but I saw a truck on Ebay that is supposedly all-original with a body-color bed and strips. I called out the owner on it and he cited a book (restoration guide) that said this:

"The bed wood in the Chevrolet & GMC trucks was originally a southern yellow pine. The Advanced Designed Trucks bed wood came from the factory treated with a combination of linseed oil and lampblack, giving it a dull black color. The boards were held down by metal strips between the boards which were also painted black . The later model trucks (60-66, presumably) came with the bed wood painted the same color as the exterior of the trucks". Black, he said, was an option.

This is news to me and I'm assuming it's incorrect information. I have never heard of this before. Can anyone confirm/refute this? Or show pics of an original body-colored bed? I know some (all?) GMCs came with black fender wells but that was the only deviation I am aware of.