You can change its color by adding the following CSS code in the Custom CSS code option of your theme on the below path.
Admin Area -> Appearance -> Theme Settings -> Custom Code -> CSS Code
#page-container .sh-nav > li.menu-item > a,
#page-container .sh-nav > li.menu-item > a > i {
color: rgba(61,61,61,0.69) !important;
}
#page-container .sh-nav > li.menu-item:hover > a,
#page-container .sh-nav > li.menu-item:hover > a > i {
color: rgba(61,61,61,0.80) !important;
}
#page-container .sh-header .sh-nav > .current_page_item > a,
#page-container .sh-header .sh-nav > .current-menu-ancestor > a,
#page-container .sh-header-left-side .sh-nav > .current_page_item > a {
color: #007aff !important;
}