Hello @funkcrush,
Thanks for writing in!
The red color is from the global link color settings in X > Theme Options > Typography > Site Links. If you change the link color and link hover color, the line above your menu item will change.
It you want a red link color while having a different color for the lines above the menu items, you can only override it using a custom css. To do that, please add the following CSS code in the X > Theme Options > Global CSS (http://prntscr.com/evui3r)
.x-navbar .desktop .x-nav > li > a:hover, .x-navbar .desktop .x-nav > .x-active > a, .x-navbar .desktop .x-nav > .current-menu-item > a {
box-shadow: inset 0 4px 0 0 green;
}
I used a green color so that you can easily see the changes.
Please note that custom coding is outside the scope of our support. Issues that might arise from the use of custom code and further enhancements should be directed to a third party developer.
Best Regards.