Whoa! Wait a minute. I highly recommend Hi-viz or Truglo. They are cheap, easy to replace, you can change colors, and if there is ANY ambient light, ie enough for sufficient target identification, they will shine brighter than the background. They snap on if you do not have a vent. rib. I have one on my 500USA and love it. Besides, it looks kinda cool.
Now if your problem is a total power failure in the pitch dark of a submarine...then maybe trij is the thing!