I tried out the mod on the new style HUD today and I was able to see the green LED much better. I had the other HUD (without the mod) next to it for a direct comparison- same angle, same distance. Painting it didn't work very well, at least with what I had to paint it with, so I went with a little different approach. I used heat shrink tubing (easy on the heat!) and carefully cut away a section to expose the LED. See attached pics.
It's a cheap and easy mod that seems to work well for higher ambient light conditions. Let me know if you come up with a better way- I'm always open for suggestions- especially if they work!
A design change where the LED's are repositioned to sit side by side so that they both face the diver would probably work best, for me anyway! But I'm not sure how that would affect someone that has a problem distinguishing colors, which is why the original HUD was modified in the first place. Anyway- just a thought!
Parker