Forms 2.0: How to add color to the column header

Summary:

How can I add color to the column headers in Forms 2.0?

Content (please ensure you mask any confidential information):

I am currently working with Forms 2.0 and would like to enhance the visual appearance of my forms. Specifically, I want to add color to the column headers to make them stand out and improve readability for users, improve emphasis and make distinctions between other columns (see yellow highlight below).

Currently, I am able to add color in the data cells through the Format/Validation Rules but not the column header as shown below. Is it possible to do so using a regular or formula column, or will it require custom scripting? The colors will be static and no conditional formatting needed.