The submit button is not customizable and our website color theme is black and white but the submit button is fluorescent green. I'm unable to change that.
Thank you for using the app. You can easy to change color of submit button by do following the post: https://globosoftware.net/kb/how-to-change-the-submit-button-color/
Please contact us via email firstname.lastname@example.org if you can't do by yourself. Our team is happy to help you on the custom.