Historical clue formulations

• Lilac or lavender — 2024-12-01
• Baby blue, e.g. — 2017-07-22
• Lavender or lilac — 2015-03-22
• Aqua, e.g. — 2013-11-24
• Many a Degas portrait — 2007-07-07
• Subdued color — 2004-04-12
• Soft shade — 2003-12-22
• Soft shade — 2002-12-22
• Many a Degas — 2002-01-24
• Many a Degas — 2001-08-31
• Bedroom hue — 2001-03-18
• Cassatt medium — 2000-10-18
• Drawing that's easy on the eyes — 1997-04-23