I'm making another shawlette in the same design as the cornflower blue one I just finished. I've chosen to use some Jacobs wool that I spun in the early days of my spinning experience. You can read about the fleece and how the yarn was prepared here. Its a "single" yarn, as opposed to a "plied" yarn and is light fingering weight.
The problem with knitting with dark wool is that it is really hard to see exactly what you are doing and how the pattern is coming along so you need to work in good light and preferably wear light coloured clothes or have a light coloured piece of fabric that you can use as a backdrop to your knitting so you can see the pattern.
I got this one done over a few days, again the picot cast off edge took a good few hours to complete.