So, I got my Misti yarn, only to find that it was not going to be anywhere remotely close to the correct gauge, no matter what I did. Don't know why they say it's the gauge that they say, but it's not. I even tried doubling it, to no avail. Good thing it wasn't too expensive.
Anyway, I have opted for the "Prime Alpaca" from Galler, in black, with green accents in "Frog Tree" alpaca. Both purchased from The Yarn Tree . I know it will take some swatching effort to get the gauge right, but I think it can be done.