I think I already know the answer....

I'm just finishing up the back of this sweater when I notice that the next ball of yarn is not exactly the same color as the one I'm working on. I keep going and then decide to alternate the skeins for the rest. I know vaguely that I should have done this to begin with but I honestly didn't realize that they were that different. There were only 8 or 9 skeins and I thought they were all done at the same time. I need to rip the body out and start again, don't I??

You can see it better in this photo.

Ugh.