lightBlue top-level property Null safety

Implementation

NBColor lightBlue = const NBColor(
    0xff0ea5e9,
    <String, Color>{
      'lightBlue.50 ': Color(0xfff0f9ff),
      'lightBlue.100': Color(0xffe0f2fe),
      'lightBlue.200': Color(0xffbae6fd),
      'lightBlue.300': Color(0xff7dd3fc),
      'lightBlue.400': Color(0xff38bdf8),
      'lightBlue.500': Color(0xff0ea5e9),
      'lightBlue.600': Color(0xff0284c7),
      'lightBlue.700': Color(0xff0369a1),
      'lightBlue.800': Color(0xff075985),
      'lightBlue.900': Color(0xff0c4a6e),
    },
    'lightBlue');