Historical clue formulations

• Dull and dim — 2026-09-10
• Gloomy and drab — 2021-10-15
• Dirty-looking — 2016-10-05
• Not bright anymore — 2015-01-15
• Drab-looking — 2013-09-29
• Needing bleach, say — 2008-03-23
• Not completely white anymore — 2006-01-31
• Grayish — 2004-07-07