Use case

There is Radio

and CupertinoRadio

I'd like/need a way to customise Radio to change in independent ways

• The color of the border.
• The background color (always transparent) for now.
• The color of the circle in it.
• The width of the border.
• The size of the circle in it.

That would allow me to have different designs or designs that are halfway through material and cupertino.

For example (ignore the ugly chosen colors):

Proposal

Add parameter to Radio and RadioThemeData to be able to set

• The color of the border.
• The background color (always transparent) for now.
• The color of the circle in it.
• The width of the border.
• The size of the circle in it.