Frank said, "On the mobile menu, it's very hard to tell when you've tapped a main menu and revealed a submenu. The only thing that tells you this is the up or down arrow. Perhaps if the submenu items were a different color or were indented significantly it would be better."

I mean this is silly, because what tells you it is a submenu is that these appear when you hit the menu item, but whatever. 

Blake what is your preference and Kyle , what would be easiest to do? I would think either wouldn't be bad, color for submenu or padding, but I haven't tried either of them.