I managed on the desktop to put color to the sub-menu.
it’s orange and when I hover it becomes white (the text changes accordingly).
However, on mobile, the menu is white (so it blends into the background) and the color doesn’t change on hover.
I’d like the sub menu on the mobile to have the same colors and hover color than on the desktop.
the Mobile menu does ( and is ) using the same colors as the primary nav.
The drop down is white which is the same as your primary nav menu items. And the sub menus are orange with white background on hover ( which doesn’t really apply on mobile).
Do you want to change the menu drop down color?
Alternatively you may want to check out the Slideout Navigation: