One thing on this bike is, although the inside of the gas tank is perfect, it appears that the tank may have been repainted, cause lots of orange peel, and I'm sure Yamaha's quality control would not have accepted that. So probably get it repainted.
Not sure what Colors were available in 74 other than the Cinnamon Brown.
Hopefully find out, thru this forum.
Found some pics of the "Vegas Green", First 2 will most likely be original paint. Third I'm not so sure as the bike looks to have had work done to it.