talking my experience with euro spec bikes we got in au from memory. not sure about usa. the "satin gold" colour as on your frame was used on 748/916 from the start i think, and went across the board in 1997. the wheels on the ss and monster were still the "glossy bronze gold" for 97 at least, not sure when they went to the "satin gold". i think all the ssie had the "satin gold" wheels. maybe the early 916 wheels, with the DUCATI RACING on the rear, were the "glossy bronze gold"? forget now. all the replacement ss frames were the "satin gold". i don't recall any variation in frame colour on the 4v models due to spec (or at all). not sure when the first economy model appeared? they were the "satin gold" until they were grey. brad