Barry-Sue,
Thanks for sharing your ideas, with pictures. You got me thinking.
I am curious, where did you find "exact matching" wood and Corian counter materials? Did Phoenix USA provide them for you? Did they make the cabinet and shelves during construction?
I found close matching pre-finished shelving at Home Depot, but yours looks better yet. For example the shelves in your shirt closet look like they came with the RV. My shirt closet shelf looks good, yours look perfect.