Palace are unbeaten in November, having drawn their three previous games this month. Saturday's win, inspired by a brace from Clinton Morrison, pulled the Eagles out of the drop zone and Warnock admitted he was happy with the performance.
"It's pleasing. It's difficult at Colchester and everything you get here you deserve," he said. "You know that you have been in a game.
"One swallow doesn't make a summer but I saw the fans' reaction and you would have thought by that we had won promotion."