If Volume is less then the previous 20 intervals, Volume is gray.
If Volume is greater then the previous 40 intervals, Volume is black.
If Volume is less then the previous 2 intervals, Volume is purple.
If Volume is less then the previous, Volume is red.
If Volume is greater then the previous, Volume is blue.
Other - white.
You can add on the indicator a 2.5 Standart Deviation of a 20 period
Bollinger Band Shifted 3 periods forward.