Yep to what Tom said. I have done it several times. In fact I have a red caboose that came without the paper. I put the paper in it plus changed the bulb. That toned down the brightness a lot. Still too bright for my taste since the light shows through the plastic body at the ends. I stuck in a storage container. I don't remember the caboose car number.I guess the diffuser paper can work in a caboose. Correct?