How to change the primary color of the Flutter Material 3 DatePicker?

Question

I am using showDatePicker() to display a Datepicker in my Flutter App.

How can I change the purple color?

Here is my Theme so far:

DatePickerThemeData(
  backgroundColor: Color.fromARGB(255, 38, 41, 48),
  surfaceTintColor: Colors.transparent,
  headerForegroundColor: Colors.white,
                  )

Answer 1

try this :

DatePickerThemeData(
            backgroundColor: Color.fromARGB(255, 38, 41, 48),
            surfaceTintColor: Colors.transparent,
            headerForegroundColor: Colors.white,

            //u need to match the text color also
            dayBackgroundColor: MaterialStateProperty.resolveWith((states) {
              if (states.contains(MaterialState.selected)) {
                return Colors.green;
              }
              return Colors.black;
            }),)