I get my acquacolor (as well as lots of other makeup) from http://fxwarehouse.info
It's florida based, so shipping might take awhile. hmm... http://fxsupply.com
is Utah based, their ordering mechanism is a bit old school but they have good service. I should think there would be at least a couple suppliers in LA and the Bay area, but I'd be doing the same Google searches as anyone else.