I completed the labeling for the annunciator lights and attached them to the prototype mounting plate to see how they look. The answer is: Pretty nice! I think, though, that I'll have to align some of the labels a little more carefully. I didn't notice until I looked at the photo that at least three of the legends have some minor centering issues. I will also have to cut the holes with a CNC mill or something, because it's really hard to hand-drill nine holes in perfect alignment.