Sample implementation for TWColor

TWColor.dart

import 'package:flutter/material.dart';

class TWColor extends ColorSwatch<int> {
  /// 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 [new Color] 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 TWColor(int primary, Map<int, Color> swatch) : super(primary, swatch);

  /// The lightest shade.
  Color get shade50 => this[50];

  /// The second lightest shade.
  Color get shade100 => this[100];

  /// The third lightest shade.
  Color get shade200 => this[200];

  /// The fourth lightest shade.
  Color get shade300 => this[300];

  /// The fifth lightest shade.
  Color get shade400 => this[400];

  /// The default shade.
  Color get shade500 => this[500];

  /// The fourth darkest shade.
  Color get shade600 => this[600];

  /// The third darkest shade.
  Color get shade700 => this[700];

  /// The second darkest shade.
  Color get shade800 => this[800];

  /// The darkest shade.
  Color get shade900 => this[900];
}