How to clean white tyres

Hear is a challenge people:

I want white/pink/something-exotic sew-ups/tubulars. I've no idea if they exist (but if they did it'd be Japan).

There is a cyclocross Yellow and Red tub, any good? Looks a bit pink in the photo. Maybe you didn't want the tread?

http://www.bikeparts.com/productinfo/Tufo-C-Prestige-30-Cyclocross-Clincher-Tubular-Red-Yellow-24882-94311.html

EDIT:

or this:

Bit pricey...$316

http://www.velomaster.com/pages/store/skudetail.nhtml?profile=trackcomponents&uid=10732&returnURL=http%3A//www.velomaster.com/trackcomponents