The Eddie Bauer "Fossil Leaf Random" is one of the prettiest sliders ever. Still the feature I like most with my EB.
Basically there are all sorts of plexiglass sliders (or can be used as door inserts after removing mirrors, etc. I didn't go through the whole website looking for Bamboo, or "grass" plexi, but as you'll see these guys go pretty wild. You might also try "textured plexiglass". Some of the 70's units had a green or amber pattern that to me looked like the bottoms of beer barrels. Who knows what you might find if you look long enough. Basic plexi isn't all that hard to work with. This kind of stuff?
You don't have to go through the factory - and you're likely to find something even more attractive if you spend a bit of time searching.
Happy hunting. Paula