Good lookin' sock, Robin, looks similar to the socks I did, as far as the color goes. As far as casting on again, just go through your yarn until you find the color you started with the first time around, that's what I did, and it came out pretty close.
Wisdom is knowing what to do. Skill is how to do it. Virtue is getting it done.
That which does not kill you, isn't trying hard enough.