How do I modify the label font size and color for the date widget

But one last question. How do I modify the label font size and color for the date widget.

You can inject custom CSS codes to your form similar to this 

#label_52,#label_53 {

font-family: "Arial", sans-serif !important;

font-size : 16px !important;

color : #f5f5f5

}

Just change the values according to your needs.

Example:

Let us know if this did not work for you.

 But how to see the existing CSS code for the both the widget date field and the standard date field so I can make the adjustment to the font?

You can follow the steps on our user guide: How to Inject Custom CSS Codes

Let us know if you need further assistance on this.