I considered buying "clear" coroplast when I first built my cage. Yes, it is clear, but in a translucent, foggy way. You can see through it, but things aren't completely clear. It is clear in the way etched glass is, you can't see through it like a window, but lights, shapes, and colors do get through.
Using it would be the same as using any coroplast, it's a matter of what you think looks best. I didn't wind up using it because it was too plain--I went for light blue instead.