Computer: MacBook Pro 15", 2.4ghz

I have been using CandyBar in its trial version for a few days now. I customized my dock and some application icons without a problem. Today I changed the generic folder appearance, changing every generic folder's icon. After logging in and out the folder change took effect, however it caused my computer to become extremely laggy, especially seen in expose and the dock animations. I tried reopening CandyBar to revert the changes but it wouldn't open. I un/reinstalled and it still won't open, so now it is completely off of my computer. I have only had this computer for under two weeks and have not gotten around to setting Time Machine up (a bad call looking back now).

Any ideas on how to either revert my folders back to normal or get rid of this lag?