Guys: Try this web site for round or square LED lights. Dan
http://www.mpja.com/products.asp?dept=485
(you may have to copy and paste to your browser)
I used some Vivisun dead-front indicators that I bought surplus and relegended. It was not easy, but I like the results.
SNIP
Cost? I'm guessing they're not cheap.
Thanks for the offer Mike. It's probably not worth the effort to start messing with converting the switches. But I'll keep it in mind!They are definitely not cheap. Very high quality build. I got mine on ebay a long time ago as new surplus SwissAir units. I re-legended them, which was similar to microsurgery, but I learned how to make a real dead front indicator.
I have a bunch of (Staco I think) incandescent indicators and switches I pulled from some old equipment if you want to experiment. They can be converted to LED bulbs.