How do I change the default light purple background in my autoresponder email after form submission?

How do I change the default light purple background in my autoresponder email after form submission?

Hi JJ,

Thanks for reaching out to Jotform Support. After checking your account, I have seen that you are currently using a guest account to create this thread. However, I have seen that you have an active account created in Jotform with two forms created. Can you please provide us the form URL link so we can further investigate what workaround we can do? If you can take a screenshot of what’s happening, that will help us to better understand what’s going on. We have a guide about how to do that here.

We'll be able to move forward once we hear back from you.