Its just a "view as" option. You can see how it'll look once its printed out by a manufacturer, but when you save its gonna go back to RGB. It sucks really bad if you plan on posting the image because it can look completely different.

i love CSP i just wish they let us draw _and_ save in CMYK/other color profiles

Its not furniture but my beat up backpack is Cookie's favorite thing to sleep on, and after i get another one i want to put memory foam and stuffing in it and stitch it up. Hopefully he will like it.