how to set text color in flutter code example

Example 1: change border color of TextField in flutter

TextFormField(
        decoration: InputDecoration(
          labelText: "Resevior Name",
          fillColor: Colors.white,
          focusedBorder:OutlineInputBorder(
            borderSide: const BorderSide(color: Colors.white, width: 2.0),
            borderRadius: BorderRadius.circular(25.0),
          ),
        ),
      )

Example 2: flutter text color

new Text(
  'Welcome to Flutter Tutorial.',
  style: TextStyle(
    color: Colors.blue,
  ),
)

Example 3: change icon color flutter

Icon(
  Icons.widgets,
  color: Colors.blue.shade400,
)

Example 4: Flutter Html text color

Flutter Html Widget 
Html(
    data: 'my text',
    style: {
    "body": Style(
    fontSize: FontSize(18.0),
    fontWeight: FontWeight.bold,
    ),
    },
)