Hello,
There is no option for this, unfortunately. Yse below code to change it (Theme Options > Custom CSS)
.et_b_header-menu.et_element-top-level .item-design-dropdown .nav-sublist-dropdown ul > li > a:hover, .et_b_header-menu.et_element-top-level .item-design-dropdown .nav-sublist-dropdown ul > li.current-menu-item > a {
color: #df5461;
opacity: 1;
}
Regards