This snippet is used in the following knowledge base article – https://kb.wpbeaverbuilder.com/article/243-change-menu-link-and-icon-colors-on-smalll-devices
/* mobile menu color hamburger */
@media (max-width: 767px) { /* Makes these changes only when screen sizes is 767 px or less */
.fl-page-nav-collapse ul.navbar-nav > li > a {
color: #f8bf7a; /* Rule 1: Sets color for default expanded menu links */
}
.fl-page-nav-collapse ul.navbar-nav > li.current-menu-item > a {
color: #d4dccd; /* Rule 2: Sets color for active page menu link */
}
.fl-page-nav .navbar-toggle * {
color: #c70919; /* Rule 3: Sets color for hamburger icon or MENU text */
}
}