Q:

change color of stepper input text in flutter

we are using the stepper built into flutter and we want to change the input text color to white, its black by default: here is the code:
 List<Step> steps = [
new Step(
    title: const Text('First Name', style: TextStyle( color: Colors.white, fontWeight: FontWeight.bold, fontSize: 19.0 )),

    isActive: true,

    state: StepState.indexed,
    content: new TextFormField(
      focusNode: _focusNode,
      keyboardType: TextInputType.text,
      autocorrect: false,
      onSaved: (String value) {
        data.firstname = value;
      },
      maxLines: 1,
      validator: (value) {
        if (value.isEmpty || value.length < 1) {
          return 'Please enter first name';
        }
      },
      decoration: new InputDecoration(
          labelText: 'Enter your first name',
          icon: const Icon(Icons.person, color: Colors.white),
          labelStyle:
              new TextStyle(decorationStyle: TextDecorationStyle.solid,color: Colors.white, fontSize: 16.0))
              ),
    ),

A:

You can use this code. 
TextField(
      style: new TextStyle(color: Colors.white),
      ...

