I dyed a background yesterday. Usually I just dye a dark color using a natural or tan wool, but I had some antique black that I decided to use. I have been meaning to try spotting over a dark wool because so many people have told me that it gives the wool more life and movement. I followed a wise woman's advice and dyed Cushing Bright Green and Crimson over a half yard of Dorr Antique Black. I used 1/4 tsp of each dye in a separate 2-cup measuring cup; added 1 1/2 C. boiling water and 2 T. vinegar to each dye liquid. Then I spotted the antique black in a flat pan; covered with foil and put in the oven for 1 hour at 300*. The amount of color that showed up on the dark wool was perfect. Now I'll be using it in the paisley rug I'm working on.
The colors in the photo are much lighter than the actual wool.