What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You can actually edit this in the Form Designer. Click the 'Color Scheme' under the Design tab. After that, click the "Simulate Highlight" option. Then, click the options icon and there is a drop down where you can change the background color. Here's a screen capture:
You can also use this custom CSS to make the highlight color transparent:
background-color: transparent !important;
Here's a guide on how to inject custom CSS to the form.
Hope that helps. Thank you.