Hello,
Sorry to say but it is not a bug or issue at the Theme end. The thing is, the Cart Icon here picks up the color from the Primary Color of the Site defined under the Dashboard > Theme Settings > Styles and colors > Colors > there you can find the Primary Color of the Site defined > just change it and it will also get changed: https://snipboard.io/3OGu8m.jpg
But if you want to specifically change the Color of the Cart Icon here then you need to apply the following Custom CSS for that:
.wd-header-cart a .wd-tools-icon {
background: red !important;
}
Location to paste Custom CSS, go to Dashboard >> Theme Settings >> Custom CSS >> Global CSS section >> paste the CSS.
In the above CSS, you can change the color name according to your choice.
Best Regards