At the end of that long post I showed some: Direct seed exchange among EU members 2024-2025 - #21 by ThomasPicard
You got the green fleshed and some really brown, all originating from Tanja’s populations initially. The Yolk Color Fan allows you to assess how dark those really were. Breeders use that to assess carotene in squash usually as a way to assess more global antioxydant properties, so to say “nutrient density” relatively to that criteria.