The grey line (Alligator’s Jaw) is the Balance Line for the timeframe that was used to build the chart (13-period Smoothed Moving Average, moved into the future by 8 bars);
The pink line (Alligator’s Teeth) is the Balance Line for the value timeframe of one level lower (8-period Smoothed Moving Average, moved by 5 bars into the future);
The orange line (Alligator’s Lips) is the Balance Line for the value timeframe, one more level lower ...