Wow. What a pain in the butt. We just spent the last 4 hours overtwisting enough thread for about 8 feet of TW. That's almost 800 linear feet of very thin wool twisted tighter than comes from the factory. However, we only had one break, and that was caused by a snag on the swift (rotating cross to hold thread) we were using. So, it doesn't look like the dybaths weakened the wool significantly. That's a very good sign.
So with no further ado, here's the colors she's using for this project.
The threads on the far left were the original color of the thread, used only to show what it started as.
The second thread is a dyebath of just tannin water.
The third batch is tannin water followed by a ferrous oxide bath.
The far right is a double dip. Tannin water, followed by ferrous oxide, followed by tannin water, followed by another ferrous oxide bath.
These dyes were all readily available in any iron age site, and were common dyes pretty much everywhere. Now she will probably warp it up tomorrow and start weaving, possibly as early as tomorrow.