She used Lacey Lamb – that lovely laceweight wool with impossibly large amounts of yardage in each skein. Karen reports that it "blooms" beautifully – just with knitting.
And if you look very closely, you might see a color variation up near the top. Contrary to your first thought – that once again, my camera skills were less than expert – you are seeing a different dyelot. Karen reports that she just grabbed two skeins off the shelf and didn't check the dyelot. For shame! Sometimes it doesn't matter – but sometimes it does – and now you can see why. We always try to check when you are buying for a project – but checking dyelot is a good habit for every knitter and the more eyes the better!
Finally, although you can't really see them in the photo (it's that photographer again), this shawl features nupps – a design feature in many eastern European lace patterns that involves knitting and/or purling 6 or 7 stitches together. Many a knitter has cursed this particular stitch and searched for a reliably simple way of completing it. Karen says she has found a neat trick for painless nupps – and she's happy to share it. Just stop in and ask her!