How can I change the black-transparent color in the background, behind the Calendar Dialog?

[arualana]

Behind the FlutterRoundedDatePickerDialog there is a background that is black with transparency.

How can I cange this color? is this part of the Theme data?

Thank you

[nachiket-gohil]

No, That is not a part of ThemeData.
If you want to change that color, then use this attribute background: Colors.blue[50],
outside theme attribute and inside showRoundedDatePicker.
Hope this will solve your problem...