Now onto the next problem: This is the second sock blank I dye, but I am afraid of knitting them up knowing that the color transition/banding will be disrupted when turning the heel. I've been searching for a way to prevent this that does not involve using a different yarn for the heel. This is what I found so far.
I remain unconvinced. I know it's hard to judge from a picture, but I have the feeling that this heel is too boxy. Then there is this pattern. If you look closely, the heel has increases, and then instead of a heel flap, a few more rounds, followed by heel decreases. While this looks like a very interesting construction, I cannot help but notice the crease on top of the foot when the sock is worn, so I will not even attempt to follow it. The increases are, however, very interesting, as they look like upside-down versions of decreases. Very symmetrical, and they are described in detail in this page. What if I combined both ideas (increases, boomerang short rows, then decreases) into a single heel?