I purchased a parts washer from the local Auto Parts store. It'll hold about 3 gallons of whatever you want to put in it and has a pump that moves it though a sort of faucet when turned on. I haven't had it long enough to know whether the pump will stand up to laquer thinner, but for the last few weeks it's worked great. I can clean the gun and move on to the next color in no time. Makes cleanup a breeze.
-Stretch
-Stretch