li.current.menu-top a.current.menu-top.toplevel_page_aa_settings .wp-menu-image.dashicons-before img {
    width: 24px;
    color: #fff;
    opacity: 1 !important;
}
li#toplevel_page_aa_settings a .wp-menu-image.dashicons-before img, #adminmenu li#toplevel_page_aa_settings .wp-menu-image img {
    width: 24px !important;
}
#adminmenu li#toplevel_page_aa_settings img {
    width: 24px;
}