The pink is really punchy in person (think a fairly aggressive hot pink) and the overall effect looks solid in the engine bay! I believe it's a very thin transparent powder coat over raw aluminum. The design is pretty cool and the black center can actually be disassembled for anyone thinking of refinishing theirs at some point down the line (such as myself.)
Mine arrived with a few very minor nicks in the finish (invisible from 3 feet away) and the rubber O-ring seal is surprisingly loose, to the point that it wants to fall off when you take the cap off to add oil. I've only had it installed for a few days so I assume the O-ring will swell with oil contact and then fit a little better, but that remains to be seen. Basically, it's not mind-blowing quality, but it is nice (way better than yellow plastic!) and compared to many others it's quite affordable for a good visual impression.