There are two Hamburger menu button used in mobile version. One for the Top Bar Menu and Second for the Main Navigation Menu. Those Hamburger Menu Button comes under the Font Color Option.
To change the color of Top Bar Menu(Hamburger Menu Button on mobile) go to Appearance > Customize > Colors > Font Colors and change the color of Top Bar.
To change the color of Main Navigation Menu(Hamburger Menu Button on mobile) go to Appearance > Customize > Colors > Font Colors and change the color of Navigation.
I’ve changed it for the main menu and the preview shows that it’s changed, but on the device it has only changed the search icon, not the hamburger icon. What am I doing wrong? 🙂