Historical clue formulations

• Ferruginous pigment — 2026-02-13
• Reddish-brown shade — 2025-03-16
• Pigment akin to ocher or umber — 2023-11-09
• Reddish-brown shade — 2023-04-03
• Brown shade — 2021-03-07
• Earthy color — 2016-11-20
• Yellow-brown — 2016-11-13
• Brown shade — 2013-12-26
• Earth tone — 2011-08-28
• Yellowish-brown — 2010-10-03
• Brown shade — 2007-06-17
• Reddish-brown — 2007-04-17
• Reddish brown — 2003-08-06
• It's sometimes burnt — 2003-06-13
• Yellow-brown pigment — 2002-07-14
• Raw ___ — 2001-05-19
• Reddish-brown — 1999-06-06
• Crayola color — 1996-03-28
• "Burnt" Crayola color — 1996-01-22