Hair clored blonde, decided to get low lights added... oops, too dark... help.. hate it !
How can I lift darker lights off and go back to colored blonde hair??

Because your hair was colored blonde in the first place, your hair is probably more porous than normal and should allow for quick fading. Try shampooing up to twice a day for up to a week with dish soap (such as Palmolive) to encourage the fading. Then be sure to deep condition your hair to counteract the drying properties of the dish soap.