I found the GREY ceramic faded the least - say around 5 or 6 years later - on my 1150 GS - of all the other COLOURS (blue, red, black, etc), but no experience of shiny finish/chrome finish like Dom mentions, the ceramic coaters, too, confirmed that the Grey was the LEAST fade colour they apply, just my 5c.
On older 1200's (and 1100' and 1150's), the BIKE is often in very condition generally, only the HEADERS 'let it down', for this reason alone, it is worth ceramic-coating, apart from the 'performance' aspect, which is an added bonus, etc...
Chris