While at WalMart one day, I found some yarn by Red Heart called Strata. First I tried using one strand of the Strata and one of a coordinating color. The hat was pretty. But then I wound the yarn into two balls and matched the colors on the two strands. This is the result with no help from me. It was such fun watching the stripes form on their own. I'm definately going to try some of their other color combinations.