Originally Posted by worldclubber

A few signs above the head is not the same as a whole section of a terminal in bright yellow, including the check-in machines and the front panels of the check-in counters.

And, and that's a big and, with no yellow on the outside of the plane and very little in the terminal, the iconic character of LH yellow will disappear. Not everyone is as old as I am and grew up with LH=yellow...