When I volunteered at Knit Fit! last weekend I picked up a couple of presents for myself. My new favorite Indie Dyer, Intrepid Otter, had a small but lovely collection of self-striping yarns at her booth. I snatched up a ball of "Highlight of my Life" and cast on the next morning at the registration table.
I think they're perfect. I cast on 64 stitches on a US #1 (2.25 mm) and am knitting plain vanilla socks.