This indicator is a combination of Money Flow Volume with an Exponential Moving Average of the MFV and a Standard Deviation.
The default setup is better suited for the 1H timeframe.
The indicator shows Money Flow Volumes in bars positive and negative, an area which is the EMA of MFV of (20 default) periods, and the STDEV of that EMA (2 default multiplier/factor), when a MFV is greater than the upper limit or lower limit (given by the standard deviation of EMA of MFV), they show an extraordanary behaviour which can be attributed to FOMO (green), OPPORTUNITY (blue), FEAR (yellow), PANIC (RED).
Generally the indicator does not help to make a decision in real time, but it helps to determine what could come next after what is shows in the previous periods, for example:
In the chart there is a MFV bar that shows that a there's a candle that shows a reversal backed by a decent ammount of volume, if it's enough to turn the MFV EMA from fuchsia to green in the next 1-2 candles you can be pretty confident that it was an actual reversal.