Years ago (1986) I had an XT600 which I used for long distance trialling, I had a spare set of wheels fitted with trials tyres so I could swap 'em over easily when I had a trial on..... when I sold the bike I kept the wheels..... still got 'em...
So I nicked the rear sprocket off the spare wheel & fitted it on Snow White.... after the obligitary gold paint of course.....
So little bit of history on me bike.....
Then the caliper discussion started, first I painted 'em silver, didn't like that so painted 'em black...
Didn't like that so, stripped them back down (again) & painted them gold...
Sexy reservoir fitted....

The future is not what it used to be....