warmGray top-level property Null safety

Implementation

NBColor warmGray = const NBColor(
    0xff78716c,
    <String, Color>{
      'warmGray.50 ': Color(0xfffafaf9),
      'warmGray.100': Color(0xfff5f5f4),
      'warmGray.200': Color(0xffe7e5e4),
      'warmGray.300': Color(0xffd6d3d1),
      'warmGray.400': Color(0xffa8a29e),
      'warmGray.500': Color(0xff78716c),
      'warmGray.600': Color(0xff57534e),
      'warmGray.700': Color(0xff44403c),
      'warmGray.800': Color(0xff292524),
      'warmGray.900': Color(0xff1c1917),
    },
    'warmGray');