I just wrote how the backlightning is visible through my annunciators.

So I looked in my daughters room for some black acrylic paint and found a small bit. Succes! Not a total succes but still a giant step forward.

I only painted the left side of this panel. The right side is without paint.

Below you can se the difference in daylight and when it is dark. Quite a visible difference. So I am off the painting around 150 annunciators.

As you can see on the right hand side the annunciators almost look as if they are lit when not painted.