Colored Volume Bars with Standard Deviation from the Mean

I have updated the indicator to help visualize volume . The percentage scale is based on a 21 period look back average . The colored volume bars represent volumes that exceed specified standard deviation of this 21 period average as indicated in the figure. The deviation bands are based on a the 55sma of the 21 period average (brown line). A 8 period sma of the 21 moving average (red line) is also indicated.