Ok...My idea is this: Take a cold cathode, place it inside the CP. Using a layer of plexi UNDERneath the CP should allow the light to show as a thin (1/4-1/8") line all around the perimeter of your CP.
Why not use the wire stuff? If you've ever seen any mods using this stuff, NO ONE seems to be able to get a clean line that doesn't look like it was ho-made. It's like asking your goober cousin to pinstripe your car; he can do it, but it'll show!
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perhaps a diagram:
plexi overlay MDF/tempered hardboard plexi UNDERlay The idea is not to light up the buttons, but to have the bottom layer of plexi lit up with whatever color you prefer.
I've seen the threads about lexan/plexi letting minimal light show through, but they seem to be referring to a BLACK light which wouldn't shine as brightly as a cathode.
If someone wants to take this idea and run with it, I don't care.....I don't need to have the first example, I just have to have MY example!

If someone's already done it, I am unaware of it. Please post a picture of your example if this is the case so I can see what it'll look like.
The ideas, they come easily. Executing them properly is a whole other story!