[Grace Themes]

Hi Bruno,

To change the menu color in mobile devices

Go to Appearance -> Editor -> style.css file
add below css code and change the color code as per your need.

@media screen and (max-width:767px) 
{
.header-nav ul li a, .header-nav ul li.current_page_item ul li a { color:#FF0000 !important; }
.header-nav ul li a:hover, .header-nav ul li.current_page_item a, .header-nav ul li.current_page_item ul li a:hover, .header-nav ul li.current-menu-ancestor a.parent { color:#00FF00 !important; }
}

Please do this change and let me know your feedback.

Regards
Grace Themes