u/Fit-Kaleidoscope8518

Obviously i know its multicoloured, but what does it say on the v5c? When you insure it, what colour is it? Ive thought about doing this to a car since before I knew it existed, im just wondering what the administerial consequences of doing such a modification would be.

Sorry if the photo isnt great. I dont know much about breather systems, should I be concerned about this? I know theres oil in the fumes vented through the pipe, and its an old car. Could this be a sign of something wrong with it? Or should I simply ignore it?