Apparently, you can make your Samsung Galaxy Note5's rear cover transparent25
Reddit user Skarface08 has managed to transform his Note5's glass-made rear cover by heating it up (with a heat gun), then using a suction cup to remove it, and a razor blade to peel off the colored film. The result: a see-through back that lets everyone take a look at the innards of the device. The entire process doesn't seem to be too complicated (there's even a short video of it at the second source link below). However, unless you really know what you're doing, we don't advise you to try this at home - not to mention the fact that removing the back plate and its color will likely void the phone's warranty.
sources: Reddit, OneDrive via Droid-life