I've been doing a web search on dyeing yarn and recently came across a great article from Knitty, Spring 2007. The article is more or less a guide outlining the basic processes. It stresses inexpensive, experimenting and having fun. So with all that in mind, I followed the basics of a vinegar soak and crock pot heating. But instead of using food coloring, I searched the cupboard for tea bags that would steep to a pleasing, neutral color.
The yarn on hand was a 4 oz (420 yds) skein of undyed merino/bamboo/nylon fingering weight (found here.) I knew from the Knitty article that the merino would take color better than the bamboo and nylon in this blend. The result was a lovely tonal skein:
I dotted the crock pot soak with Celestial Seasonings' Safari Spice (African Rooibos / Red Tea) and Black Cherry Berry tea bags, along with a bag (or two or three or four) of Bigelow's Constant Comment. The bags sort of mingled among the strands and produced a nice depth of color with subtle variations.
It should knit up into lovely (and fragrant) lace, since the Safari Spice overpowered the vinegar and lingers still!
"It's fun to have fun!" Dr. Seuss