While that paint scheme is definitely Yamaha Factory "Inspired", it appears to be a bone stock midnight with the exception of the slip on muffler (does that even muffle?) and the paint. It's well done paint, but there's nary another mod to be seen. Fer cryin' out loud, it's got stock headers, airbox, and SEAT! Hardly a custom.
(edited to add) The price that he's asking now seems reasonable for the age/miles if you like that custom slip-on. I paid $7000 2 years ago for an '04 with 5K miles with only a cobra slip on differentiating it from stock. And if the original purchaser bought it for full retail, plus custom paint cost, plus that slip-on, plus tax, the total could have hit $15K.