Historical clue formulations

• Indigo dye — 2026-09-01
• Indigo dye — 2026-03-17
• Dye-yielding shrub — 2026-03-07
• Blue dye — 2024-08-11
• Denim dye — 2023-11-11
• Kapoor of "Slumdog Millionaire" — 2023-07-30
• Kapoor who played the game show emcee in "Slumdog Millionaire" — 2023-06-25
• Indigo plant — 2023-04-18
• Kapoor of "Slumdog Millionaire" — 2023-03-26
• "Slumdog Millionaire" co-star ___ Kapoor — 2020-02-16
• Dark blue — 2019-11-28
• Deep blue dye — 2019-09-16
• Blue dye — 2019-09-06
• ___ Kapoor, "Slumdog Millionaire" actor — 2019-01-05
• Deep blue dye — 2018-10-25
• Indigo source — 2018-08-12
• Indigo dye source — 2018-06-28
• Component of the pigment Maya blue — 2017-04-08
• Source of indigo — 2016-11-01
• Deep blue dye — 2015-06-23
• Indigo source — 2014-08-13
• Dye containing indigotin — 2014-05-09
• Blue dye source — 2014-03-11
• What makes blue jeans blue — 2014-02-16
• Dye-yielding shrub — 2013-12-04
• Indigo dye — 2013-12-02
• Indigo source — 2013-11-23
• Deep blue — 2013-01-20
• Indigo plant — 2012-10-03
• Source of indigo — 2012-08-19
• Shade darker than azure — 2012-07-29
• Blue shade — 2011-11-23
• Plant in the pea family — 2011-10-08
• Shrub used in dyeing — 2011-05-29
• Source of indigo dye — 2010-11-30
• Navy relative — 2010-01-30
• Indigo dye source — 2009-04-02
• Blue shade — 2008-05-18
• Dye plant — 2007-05-24
• Shrub of the genus Indigofera — 2006-02-04
• Dye-yielding plant — 2005-02-09
• Blue dye — 2004-08-22
• Indigo plant — 2003-10-23
• Indigo dye source — 2003-04-15
• Indigo plant — 2003-02-06
• Dye-yielding plant — 2002-11-24
• Indigo source — 2002-09-24
• Blue shade — 2002-08-22
• Indigo dye source — 2002-07-28
• Blue shade — 2002-06-15