I'm an idiot. How do I solve the menu problem?

[arretx 0]

My dropdown menu on the navbar is transparent...which makes it very difficult to read the links in the dropped menus. I can't find anywhere in the settings to change the coloring of the nav menus, and I've tried a plugin that someone created to add it to the settings but it didn't work. Any ideas? Problem site here...

[catrina 103]

From what I can see, the drop down menu background color is light grey (on Firefox for Mac). Is this not what you see or am I missing something...?