textfield style flutter

TextField(
  style: TextStyle(color: Colors.red),
  decoration: InputDecoration(fillColor: Colors.orange, filled: true),
)

TextField(
              decoration: new InputDecoration(
                focusedBorder: OutlineInputBorder(
                  borderSide: BorderSide(color: Colors.greenAccent, width: 5.0),
                ),
                enabledBorder: OutlineInputBorder(
                  borderSide: BorderSide(color: Colors.red, width: 5.0),
                ),
                hintText: 'Mobile Number',
              ),

TextField(
  decoration: InputDecoration(
    border: InputBorder.none,
    hintText: 'Enter a search term'
  ),
);

TextField(
  decoration: InputDecoration(
    border: OutlineInputBorder(),
    hintText: 'Enter a search term'
  ),
);