MaterialColor constructor Null safety

const MaterialColor(
  1. int primary,
  2. Map<int, Color> swatch

Creates a color swatch with a variety of shades.

The primary argument should be the 32 bit ARGB value of one of the values in the swatch, as would be passed to the constructor for that same color, and as is exposed by value. (This is distinct from the specific index of the color in the swatch.)


const MaterialColor(super.primary,;