Hello, to answer all the questions.
1-Shop Line paint, same color as wife's 2020 Elantra, used Preval sprayer, Its suppose to be Candy Apple Red.
Spray Max 2K clear.
2-what "jgger" says on the sprocket, the small sprocket bolts to the large one, has a boss that spaces the two, threads on the large sprocket. When unbolted you can rotate them. Its a simple system, together the sprockets weight about 4-5 lbs. The PO ran the chain on the large sprocket without moving it over, completely wore out the sprocket.
3- Dave, actually the parts I bought were fairly reasonable, piston ($11), gaskets, seals, cables. No body parts, everything was there. Paid $650, for the bike, probley spent $400 on parts. A lot are still available from Yamaha, including the chrome side cover and gas cap with the Yamaha logo.
I restored it in record time, bought on April-14, finished May-18. small bikes are so less time consuming.