When sub-level items show in hamburger menu view, the background colour of the group of sub-level items is subtlely different than the background colour of the other menu items, although there is actually no method of selecting the background colour for those sub-level items that I can see. 

Or is there a way of setting that sub-level background colour?

Not an issue in desktop view, as the sub-level items slide out as a separte list.

Adrian

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