I have finally found a supplier of natural dye supplies!! Available now are Natural Dye Starter Kits and Natural Indigo Dye Kits - I cannot wait to play (I mean test product) one of these kits myself :) They are not inexpensive but they are a great way to experiment with natural dyeing.
.Natural Indigo Kit
This kit contains 100 g natural indigo, 100 g thiourea dioxide, 100 g lye, instructions. $30
full practical instructions and a detailed artisan poster of all the extracts.
Extracts easily dissolve in water and are so concentrated that only a small amount is needed. $100
Applied using many techniques including hand painting, they add luminous colour and velvety texture to any cloth. Full instructions included in kit. $120