Just posting this in case someone else does what I did. I ordered a tempered glass sheet (works great), but I failed to ask for the back to be frosted or colored. This makes the contrast very poor. I thought about painting the back of the glass, but then I found this product on Amazon which works great. It is sold as a “window film” to frost a bathroom window. It is just a vinyl sheet and can be easily cut with a blade to the size of the tempered glass.