Historical clue formulations

• Green-winged water bird — 2026-09-05
• Color of an ovarian cancer awareness ribbon — 2026-07-25
• Shade of green named after a duck — 2026-03-23
• Bluish green — 2024-10-14
• Dabbling duck — 2024-07-27
• Bluish green — 2024-07-22
• Blue-green — 2024-04-21
• Shade named for a bird — 2023-11-18
• Blue-green shade — 2023-03-15
• Color akin to turquoise — 2023-02-13
• Duck color — 2022-06-23
• Relative of turquoise — 2022-05-22
• Blue-green shade — 2021-08-09
• Color on Jacksonville Jaguar uniforms — 2021-04-21
• Bluish hue — 2020-10-07
• Blue-green shade — 2020-07-29
• Shade akin to turquoise — 2020-03-18
• Color akin to cyan — 2020-02-23
• Shade akin to turquoise — 2019-11-24
• Pond swimmer — 2019-07-31
• Blue-green shade — 2019-07-30
• Relative of aqua — 2019-01-26
• Bluish green — 2018-08-27
• Blue-green — 2018-04-29
• Blue-green hue — 2017-11-26
• Greenish blue — 2016-01-24
• Color akin to cyan — 2015-10-03
• Old Crayola color akin to Tropical Rain Forest — 2015-06-20
• Blue shade — 2015-02-10
• Color akin to turquoise — 2015-01-28
• Background color of a $100 bill — 2014-11-09
• Relative of turquoise — 2014-10-12
• Green-blue — 2014-08-19
• Blue-green — 2014-05-26
• Mallard relative — 2014-05-25
• Blue-green — 2014-02-02
• Duck or one of its colors — 2014-01-06
• Greenish shade — 2013-02-20
• Greenish shade — 2013-01-13
• Freshwater duck — 2012-02-27
• Blue-green shade — 2012-02-21
• Greenish blue — 2012-01-01
• Blue shade — 2011-09-23
• Cousin of a canvasback — 2011-09-02
• Blue-green — 2011-05-29
• Relative of turquoise — 2011-04-09
• Blue-green hue — 2010-11-03
• Greenish-blue — 2009-07-05
• Blue-winged duck — 2009-04-06
• Cousin of a greenwing — 2009-02-14