How do I change the font color of UIPickerView and UIDatePicker?

I have a viewController with a UIPickerView and a UIDatePicker as shown in the screenshot from my storyboard as below. I tried adding runtime attribute as explained here. But following it only changed the font color of the initially highlighted text. I want to change the color of text in my both pickerView and datePicker to white. I am unaware of how can I achieve it.