@reekes
“I eventually figured it out thanks to this post: https://wordpress.org/support/topic/neve-dropdown-menu-unreadable-on-mobile/
You have to:
1) Select Header
2) Set the view to mobile on the bottom settings part
3) Hover over the box on the left side that says Primary Menu. A settings icon should appear
4) Select Style and change the Row Background to the colour you want.”
Thanks to a forum member I have found out how to do this!
Thank you so much! this has been driving me crazy!