I tell you, under the artificial lights in my kitchen last night, while the yarn was wet, I thought I had a pretty good match. But in the light of day...
Yowza! That's bright. The yarn I tried last night was 100% wool and the yarn I'm trying to match has bamboo and nylon in it. So these were never going to be a great match anyway even if I did a better job with the color.
I found some merino/tencel in my stash that's much closer to the Timaru. I tried again but I think I was a bit too hesitant with the color. So it's looking too light.
I'm going to wait and look at it dry in natural light before I throw some more dye on it. I'm sure I'll just keep fiddling with it until I lose patience then just use whatever I end up with.