I, who was of the opinion that cables are "wasted" on variegated yarn, am knitting the Celtic Cap with yarn I had in my stash and which is variegated. Actually, it doesn't look half bad and one can see the cables pretty well.
I find that cabling instructions and my interpretion of said instructions don't mix. I frequently do it in the wrong direction, i.e. cabling in front instead of back and vice versa. Now, I have discovered that "oops, I did it again" and I am not up to frogging. It's not that I did one cable wrong, I did it all of them wrong. So one could argue: hey, it was supposed to go this way....whatever. I won't frog, that's it.
Apart from that you might have thought that there is not much knitting going on - wrong. I made another Celtic Cap for myself and I even decided to model it myself on the photo because it turned out to be a hat I don't mind wearing (well, don't mind too much). I wear it differently than intended 'cause that's what I do. I tweak things to make them mine. I had a picot edge in mind and when I was finished I tried the cap on before fixing the rim. I like it rolled and it gives it the little bit of extra room I prefer. I still like the picot edge - just not on me. The cap is big, my gauge check was sloppy, but it turns out that's a good thing. Will post picture as soon as I've made it.