How can I change the field highlight color?

Another question - my form text is white, and when someone clicks on the input box the background changes to a light yellow and the text disappears:

https://www.screencast.com/t/48yuTpRR

Can I change the color of the yellow box to something darker, or the text to black onClick?

What you're referring to is the field highlight effect. You can change this or remove this altogether by following the guide linked below.

Complete guide: How-to-Customize-the-Highlight-Effect

Thank you Jim!!