From the Sanguine Gryphon website:

This sleek cap features a cable and stranded colorwork pattern inspired by the ironwork supports of a dome in the Grand Palais des Champs-Elysées, built for Expo 1900. Knitted in a jewel-toned variegated focus yarn with black as the contrast color, the pattern resembles the elaborate stained glass of Tiffany lamps. The pattern includes instructions for three sizes.

Sample shown in ‘The Interpretation of Dreams’ (Spring/Summer 2011 colourway) and ‘Musterion’ (Standard colourway).

Errata
The hat body chart was missing from the original pattern document; please see the correct chart at left.