Fair Value Gaps / Imbalance are created when Price moves away in one direction at speed / impulsively.
A gap is created between the first and third candle wick which creates the Imbalance / Fair Value Gap and is sometimes a potential area of where the market could return making the area a good place to look to trade from or to aim for.
This Imbalance / Fair Value Gap indicator will change the color of the candles where these gaps have been created and also create a zone.
Although the candle color will not change, the zone however will be removed when price has closed the Gap making it easier to look for the untouched Fair Value Gaps / Imbalance when opening the charts or changing between timeframes and allowing you to create your potential areas to trade from or areas to target.
You can set alerts for when a FVG / Imbalance zones are created and also for when the zone gets mitigated by price.