Natural dye - the elusive green, from parsley! At http://thethousands.com.au/melbourne/make/spin-and-naturally-dye-your-own-wool/
Dyeing with cherry bark
Mushroom and lichen dyes - these would make great quilt colors!
hand dyed linen..
Grandir Couleur Tyfu Lliw: Juin 2010
Élégance & Elephants: la teinture du tissu naturel avec curcuma et café
Harvesting Color" identifies and explains where to find 36 wild plants that will yield beautiful natural shades and shows how easy it is to make natural dyes. Complete with maps for each plant's range, a master dye recipe and a knitting project for every time of the year, "Harvesting Color" is an essential guide to the growing field of natural dyes.
naturally dyed color wheel - great flickr image, with descriptions