The pattern is a free one from tincanknits called Anthology. They give you a recipe for the hat, a cowl, and I think one other thing in the pattern as well as a bunch of colorwork charts. I ended up finding a different motif on their website called clayoquot that I liked better than any of the charts in the actual pattern, so I referred to a picture of that and used it in part of my hat. I started with the brim in dark gray (until I ran out) and then finished with the beige. The clayoquot pattern then morphed right out of the brim really nicely in a way the makes the overall color transitions look great. After one repeat of the motif I improvised my way up the rest of the hat, dictated by when I ran out of the beige. The crown decreases were really easy, and I still think the whiskey barrel brown is one of my favorite colors to knit with.
I added this spiffy leather tag on the brim, which is witty and true for both hat and wearer.
Pattern: Anthology by tincanknits, free on Ravelry (my Ravelry page)
Yarn: madelinetosh dk in 'el greco', 'court and spark', 'terra', and 'whiskey barrel'
Needle: US 4 and US 6