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.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
I'm not sure if I understand your query correctly. If you want to edit a theme that is applied to your form, it may be edited from the Form Designer.
You can find different sections from the Design tab in Form Designer that can help you in editing the theme.
Hope this information helps! If you are referring to something different or need any further assistance, please let us know. We will be happy to assist.