Related Clues:
- Strip brightener
- It lights up Las Vegas
- Attention-getting sign
- Bright light type in the big city
- "Open 24 hours" sign, perhaps
- Gas in a DINER sign
- Really bright
- Element seen in Las Vegas
- Broadway light type
- Chemical discovery of 1898
- Breaking news: energy — short of gas
- Helium-__ laser
- Like an 'Open 24 hours' sign, perhaps
- Gas in commercial lights
- Vivid crayon category