How to change colour topbar-submenu border in Foundation 6?

Question

In the _settings.scss file I don't see a variable to change the topbar-submenu border colour.

There is $topbar-submenu-background to change the topbar-submenu background colour, but there's no variable for the border.

Answer 1

Figured it out, it's $dropdownmenu-border under 18. Dropdown Menu.