GetBarTooltipColor typedef
GetBarTooltipColor =
Color Function(BarChartGroupData group)
/ Provides a Color to show different background color for each rod
You can override BarTouchTooltipData.getTooltipColor, it gives you
group
that touch happened on, then you should and pass your custom Color to set background color
of tooltip popup.
Implementation
typedef GetBarTooltipColor = Color Function(
BarChartGroupData group,
);