The plasma finish itself varies a from silvery, to silvery/gold in many stages, up to shiny silver on the much later A serial 2nd gens which appear more polished in their apprarance. None however, in my experience and ive owned many early frames, are the same as the 'bone white' finish of the early plasma Juliets. This has been discussed at length many times before, and I am of the firm belief that a bone finish plasma R1 does not exist, so do not be concerned by its appearance - this is perfectly normal and exactly what you should expect. Congrats on the purchase, they are a beautiful frame!
Thank you for the explanation @discostu. Don't have much experience of the Plasma/Fire Romeos.