Fire up your local for sale advertisments.
Find a bike for sale at a suitable distance from you, say 50 miles.
Ride over there to have a look.
Walk up to the bike, kick the tyres and then announce that 'it's not white'.
Depending on the owner's reaction, either jump on your bike and ride like crazy or take him down to the pub for a beer.

The next day, choose a for sale notice in the opposite direction.

Richard