Plastic parts are always different.

Send the hard stuff back ! PUI is bang on my 68 has the same color combo as yours car an it matched perfect. 

PUI and Legendary both have a similar color on their parchment vinyl and both are too "goldish" compared to original but they look nice regardless. both are also too hard compared to the factory material which had a softer almost leather feel. The major difference with PUI and Legendary is that Legendary has deeper pleating while PUI has a flatter look once installed especially compared to the factory material. No repro companies do the parchment color properly on the hard plastic stuff. The factory hard plastic was bang on to the vinyl. Only way to get it right now on plastic repro stuff is to spray a two part system from a company in the US but it's big money (a few hundred bucks just to get enough paint to do the seat backs, skirts, arm rest bases etc. I don't have the name in front of me know but I can go get the name off of a can if someone wants it.