Hello, C64,
Thank you for contacting us and for using XStore.
Please go to Theme options > Header Builder > Header Sticky > change colors.
Also, read this article – https://xstore.helpscoutdocs.com/article/139-cant-see-changes-in-the-header-on-the-home-page
If you have any additional questions or concerns, please do not hesitate to reach out to us. Our support team is always available to assist you.
Kind Regards,
8theme team