Trouble matching the vibrant background of a Yosemite NSMenuItem containing a custom view

Question

I am attempting to add a custom view to an NSMenuItem in the OS X 10.10 Yosemite menu bar.

The custom view is simply an NSView background with an NSTextField “label”

Answer 1

I've just discovered that +[NSColor keyboardFocusIndicatorColor] is the right color (on El Capitan at least), whereas the expected selectedMenuItemColor is by far too dark.