Beautiful bike. A friend of mine has an early 90's 17" black T-Max in mint condition hanging from the ceiling of his garage. It never gets ridden so I'm hoping one day he will sell it to me.
It looks like you had a 4" teflon sleeve on the rear derailleur cable, but then removed it, no? I cover most of the cables on my bikes with 14 and 16 gauge teflon sleeves to protect the paint from being scratched (it also keeps donuts in place if you section it off). The overall aesthetic effect isn't quite as "clean" as just bare cables, but the sleeves are clear (transluscent, actually) so you don't really notice them until you get up close.