Editing CSS for Label Fields

I have been trying to format the CSS for the Label for fields like First Name, Last name, Email, etc.
Currently the css seems to be in a Span TAG ( <label for="firstname" id="cblabfirstname" class="col-form-label col-sm-3 pr-sm-2 cbValidationError text-danger" aria-invalid="false"><span style="color:#CCC;font-style:italic" title="_UE_YOUR_FNAME">First Name</span></label>
However, I can not seen to find the code that effectively edits the color and font style CSS.
I have gone through many different CSS files including the template CSS, CB CSS, Bootstrap CSS, Jquery CSS and the database itself searching for the proper code.

Please advise where the (location) or what file controls the field Labels for the Registration Page!

Thanks in advance!

Right click and inspect element on the label to review its styling in your browsers developer tools. You can apply your custom CSS using CBs built in CSS override functionality shown below.

www.joomlapolis.com/blog/kyle/18711-template-css-overrides-made-easy

You can also use CB Template Changer and its built in Template Builder to generate new templates for CB. In the Template Builder you've several coloring options for easy change of coloring.