Late response here, but I have cleaned cherry browns by submerging in pure water (distilled is best), with no ill effects, other than somehow causing a few bad solder joints to become obvious, but that was easily fixed with a soldering iron. Just dropped the PCB under the water, brushed all around the switches and worked them all well, took it back out, shook it a bit, then blew as much water out of the switches as I could with compressed air, finished up rushing the drying process with a hairdrier, then put it all back together. Typing on it now =p
This keyboard wasn't subjected to a beverage spill however, I simply risked the water cleaning because there was so much board-chow around and on the switches, and probably also getting into them, that I couldn't bear the thought of it corroding the insides of them.