Ch 2 with white or start with a magic ring.
1. 6 sc in the 1st ch or in the magic ring, 1 sl in the 1st sc (= 6 sc)
2. 2 sc in each sc (= 12 sc)
3. 2 sc in every 2nd sc (= 18 sc)
4. 2 sc in every 6th sc (= 21 sc)
5. 2 sc in every 7th sc (= 24 sc)
6. 2 sc in every 4th sc (= 30 sc)
7. 6 x (2 sc, 2 sc in the next sc, 2 sc) (= 36 sc)
8. - 9. 36 sc
10. 36 sc only in the front loops of round 9.
Fasten off and weave in the ends.
Continue with yellow, crochet in the back loops of round 9.
11. - 15. 36 sc
Fasten off and weave in the ends.