Hello,

Firstly, sorry to say but the Header as a whole doesn’t work on Hover. It works with and without Sticky.

So, you can try using the following Custom CSS on your Site to specifically change the background color of the Sticky Header:

.whb-color-dark:not(.whb-with-bg) {
   background-color: red !important;
}

In this CSS, you can change the color from red to your choice.

Location to paste Custom CSS, go to Dashboard >> Theme Settings >> Custom CSS >> Global CSS section >> paste the CSS.

Best Regards.