For my project with the RVR I might have to paint it black so it does not reflect light as much as the white material does. So I wonder what material it is made of. Plastic obviously but depending on the type and surface treatment some paints don’t stick or some stick better then others. So can you tell us what material the RVR is made of?
Or probably also interesting for others can you give us a surface cutout pattern of the RVR? Don’t know what CAD program you used to design the casing but most can convert a model to a surface and project that to a 2D plane to create such a pattern. I would put some vinyl foil on it for a less permanent solution, but this might also be very interesting for people who want to design some decals to put on their RVR to personalize them.