While browsing in creative mode, I saw an item called Irradiated Glass. It looked pretty cool and gave off a "This have an awesome glowy look" vibe, so I quickly built a basic house and tried to use Irradiated Glass as the windows.
To my disappointment, I couldn't. I tried looking on the Wiki to find what it was used for, no information there. I tried google, but that only turned up cool images of glass bottles that glow that eerie neon green. I asked in the chat and was told it was an item used in from recipe.
Anyways, I thought I'd suggest giving us the ability to use it as we would any vanilla glass pane but have it glow at night. Since it's radio active, maybe even have it damage players and mods in range. To avoid the damage, players would have to wear a nano, quantum, or other specialty suit of the like, or combine with with reinforced glass to shield from the radioactiveness and let the glow shine through.