How to change size and color on dropdown menu

Hi!

How (where) can i change the size of the dropdown menu (the actual font size) ?

Also is there a way to change the color of the background of the dropdown menu and font color separately ? ( don’t know which fields it under the general styling tab)

I need to the dropdown menu to be a bit more clear and “visible”

You can see the site here:
http://indiangarden.nu

Thank you!