| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| In the '90s, Nat Geo's logo was updated to feature National Geographic's iconic border of this color | yellow | $200 | J | SCIENCE MAGAZINES | 2025-04-16 | #38 | |
| Lignin, a substance in wood, changes when exposed to oxygen; that makes white paper turn this color as it ages | yellow | $800 | DJ | SCIENCE | 2011-11-29 | #6257 | |
| Using spectrometry, you'll find that helium produces a bright line of this color | yellow | $800 | DJ | GENERAL SCIENCE | 2008-12-15 | #5586 |