More shading was added on these larger models. I liked the contrast between the blues and golds on the TRex (regardless of whether it was an unlikely color combination in real life).
The Triceratops' paint job is a version of the Battat 1:40 scale Triceratops, which I have always liked a lot for some reason.
The diorama was simple to construct out of railroad diorama supplies, with some real rocks thrown in and a custom built Palm tree.