| Clue | Source | Date |
|---|---|---|
| Colour of shirts worn by Chelsea FC in its first few seasons | The Times Specialist Sunday | 05 Jul 2026 |
| Shade named for a famous boarding school | ||
| Color named for a famed prep school | New York Times | 27 Oct 2024 |
| Shade of green | ||
| Top double agent condemning silver as new school colour | The Telegraph Toughie | 08 Jun 2018 |
| Colour adopted for an 1836 boat race | Newsday | 27 May 2017 |