I too have white wheels and i use parrafin on a cloth. It cuts through the chain lub/crap very quickly and just wipes off.
Vulcanet Wipes for pretty much everything, because I'm a lazy shit. 50% off at Infinity at the moment as well.
Just a tip on keeping the wheels cleaner for longer and easy to clean Swissvax UK expensive but the little tube will last for years and does what it says on the tin/plastic container
T Can I just say if you have your wheels powder coated, it might be worth running a tap down the bolt holes before you re atatch the brake discs, as I snapped a bolt. Big mistake, nothing but trouble since then.
Can't believe no-ones mentioned good old fashioned Gunk! Brushed it onto my rear wheel today, no worries getting it on the tyre and simply rinse off .......job done.