747/777 autopilot disengage bar

The AP disengage bar isn't a toggle switch IRL. It should stay in the new position when you click on it.

E.g. if the bar is moved to the down position, it should stay down (and hence prevent AP engagement).

In the 747 in the down position (movement should be animated the same way as in the 777) it should reveal an amber area.

In the 777 this area is painted amber with black stripes.

Tried to find photos from the 747/777 with the disengage bar down, but wasn't successful.

On the 767 it's simply an amber surface behind the bar (most likely identical on the 747)

and on the 787 the same surface is hatched amber/black (most likely identical on the 777)