Note: When changing color on Hat, you don't need to cut the old color, simply carry it loosely up the WS of the Hat. Check the tension of the carried strands every so often as you work to be sure they're neither too loose or too tight.
With crochet hook and B, ch 4; join with slip stitch in first ch to form a ring.
Work 8 single crochet in ring, join with slip stitch in first st.
Continuing with B, and double pointed needles, pick up a st in each of the 8 sts around the ring, placing 2 sts on each of 4 double pointed needles.
Place marker for beg of rnd.
Join by working the first st on left hand needle with the working yarn from the right hand needle and being careful not to twist sts.
Rnd 1: With B, pfb in each st around – 16 sts at the end of this rnd.
Rnd 2: With B, *p1, pfb; rep from * around – 24 sts.
Rnd 3: With A, *k2, kfb; rep from * around – 32 sts.
Rnd 4: With A, knit.
Rnd 5: With A, *k3, kfb; rep from * around – 40 sts.
Rnd 6: With B, knit.
Rnd 7: With B, *p2, pfb, p2; rep from * around – 48 sts.
Rnd 8: With B, purl.
Rnd 9: With A, *k7, kfb; rep from * around – 54 sts.
Rnds 10 and 11: With A, knit.
Rnd 12: With B, knit.
Rnds 13 and 14: With B, purl.
Rnds 15-17: With A, knit.
Rnds 18-23: Rep Rnds 12-17.
Rnds 24-26: Rep Rnds 12-14.
Rnd 27: With A, knit.
Rnds 28- 33: With A, *k1, p1; rep from * around.
With circular needle and B, cast on 104 sts.
Rows 1 and 3 (WS): With B, knit.
Row 2: With B, purl.
Rows 4 and 6: With A, knit.
Row 5: With A, purl.
Rows 7 and 8: With B, purl.
Row 9: With B, knit.
Rows 10-21: Rep Rows 4-9.
With B, bind off.
Weave in ends.