secondaryHeaderColor property Null safety

Color secondaryHeaderColor
final

The color of the header of a PaginatedDataTable when there are selected rows.

Implementation

// According to the spec for data tables:
// https://material-io.cn/archive/guidelines/components/data-tables.html#data-tables-tables-within-cards
// ...this should be the "50-value of secondary app color".
final Color secondaryHeaderColor;