All of the sizes take less than one skein of each color. I used Lion Brand Vanna’s Choice which is 170 yards per skein. 🙂

Hi!
I don’t have a pear hat, do you mean the lemon? To change colors, you just drop the first color and start knitting with the second, it’s the same in the round as it would be with stripes. Make sure the tail ends are inside the hat before you bind off so you can weave them in. I found this explanation to be pretty good: https://www.thespruce.com/changing-colors-in-knitting-2116378 Hope that helps! 🙂

Hi! I have not had anyone else tell me they had this problem. The thing is, because you’re decreasing, the seed stitch won’t stay exactly perfect. In row 9 there will be two purl stitches in a row in each repeat. (And this will also happen in other rounds.) But as you decrease I’ve done my best to spread those spots out to make them less noticeable. When you look at the overall hat these spots shouldn’t be too terribly obvious. There really is no perfect way to decrease with seed stitch and keep the pattern up perfectly unless you so double decreases. But that changes the shape of the hat in a way that I didn’t want. Hope that helps! Happy Knitting!