changing color of drop down menu for page header

Tom

I hope you and your family are doing well.

I am using the page header function to add a full size header image in on my home page.

I note the advanced settings allow me to customize the nav menu colors to suit.

However one of my nav menu items has a drop down menu

So I also need to customize the colors for the sub menu items on that page.

Can you please supply the CSS for this.

I need to customise both the menu item text AND also the back ground (including rollover)

Thanks in advance for your assistance.

Kind Regards

Max