GetLineTooltipColor typedef

GetLineTooltipColor = Color Function(LineBarSpot touchedSpot)

/ Provides a Color to show different background color for each touched spot

You can override LineTouchTooltipData.getTooltipColor, it gives you touchedSpot object that touch happened on, then you should and pass your custom Color list (length should be equal to the touchedSpots.length), to set background color of tooltip popup.

Implementation

typedef GetLineTooltipColor = Color Function(
  LineBarSpot touchedSpot,
);