Historical clue formulations

• Blue, in Spanish — 2024-12-09
• Un color on El Salvador's flag — 2024-10-12
• Blue, in Spanish — 2024-09-16
• Blue: Sp. — 2023-03-12
• El color del mar — 2022-03-04
• Blue: Sp. — 2020-11-10
• Blue: Sp. — 2020-09-29
• Color of el mar — 2017-07-23
• Color of el mar — 2017-05-07
• Blue, south of the border — 2008-10-01
• Blue, in Bogotá — 2008-05-13