This is an excellent site for clothing colours. He matched actually dyes found in Anglo-Saxon archeology and used by a woman who dyes authentically and then matched the colours to Vallejo and GW paints. Just a few paints per pallet but the pallets are divided up between the seasons and seasonal dyes, I gather.
This may be of some help:http://1000footgeneral.blogspot.de/2012/09/dark-ages-color-palettes.html