The bottom of the hat is some harmless seed stitch in a single color. But after a few rows, you then have to attach nine bobbins of yarn, one for each separate segment of color.

Here's the pattern; you can see a greyscale version of the anticipated final product in the upper right.

The hat, after a few rows of zigging.

Yes, you really have to knit with one bobbin while eight others are dangling off your knitting. And yes, they tangle *very* easily.

Halfway though the first zig.

Only eight bobbins are showing, because I finally ran out of one and haven't attached a replacement yet.

First zig done, and onto the first zag!

I spread out one of the zigzags so you can see how the colors fit together.

Done with the main body of the hat, I'm about to start the decrease rows that will taper it at the top.