So very, very disappointing

After scoring a good deal on some Rowan Summer Tweed yarn at the local yarn store, I realized that they didn't have enough of the purpley-blue color for the sweater I wanted to make. I hopped on Ravelry and found a couple people who had the same colorway in their stashes, and I arranged to buy them for even less than I paid the local yarn store. Double score!

The additional skeins are different lot numbers than the original purpose, which usually means you're in for some minor variation in color. So you can imagine my surprise when the first of the additional skeins showed up and looked nothing like the color with which I had already started the sweater:

Yes, they are the same colorway (at least according to the labels). No, the lighting isn't a factor - they look this different no matter what lighting I use. This is just the worst dye lot variation I've ever seen.

I'm hoping that the other four skeins that are coming from Scotland will be somewhere in between these two colors, so that I can fade gradually from the purpley into the powder blue. Or that they're powder blue and I'll have enough to make the top part of the sweater without the three skeins of the purpley yarn I originally bought.

Or that I get up the nerve to just knit with it no matter what color it is, then overdye the whole thing black or really, really dark purple or something.

Crud.