Board Game Arena

How do colour preferences work in Imhotep? My selected colours are Cyan > Khaki > White > Yellow. Imhotep assigns me gray (not white?). Mainly, I'm wondering how to get brown because that's not even an option to select. On an unrelated note, I'm trying to figure out how to get brown in Caylus and haven't figured that one out yet either. I thought Khaki might be the magic charm, but no.

In a game with fixed player colors, the BGA framework tries to assign you the color which is closest to the chosen color in your preferences. So in this case, if you're the only player who has cyan as their first preference, grey is closest to cyan. If you'd have white as your first choice, you'd get the white stones. To get brown, I guess you might have to have red as your preferred color.