def Bullish = close is greater than reference VWAP()."VWAP";
def Bearish = close is less than reference VWAP()."VWAP";
def NearVwap = close crosses reference VWAP()."VWAP";
AssignBackgroundColor(if bullish then Color.GREEN else if Bearish then color.red else color.black); 
AddLabel(yes, if bullish then "1", color.green else if bearish then "-1", color.red else " " , Color.Black);
plot scan = reference VWAP();
scan.AssignValueColor(Color.BLACK);