I decided to make my concern about my health and my own studio's toxicity into a project. I am slowly researching how to make my own pigments from plants I can grow myself. According to Rita Buchanan author of A Dyer's Garden I am already growing a prime pigment flower, Coreopsis.
I am talking to Kremer Pigments in NYC about non-deadly colorfast additives.
If anyone has any advice or resources please send them my way. I will post my progress here.
And according to WildColours.co.uk you can make yarn to look like this with Coreopsis: