Colorwheel by Big Bad Wool
100 yards each of light worsted weight yarn in 11 colors for center, 400 yards for the surround and 100 yards for the outside trim
size G (4.0 mm) crochet hook (adjust hook size as necessary to obtain a circle which lays flat.
note: The color sequence for the inner ‘wheel’ flow from yellow, green, and blue, to orange, pink, and purple. You can choose to do the opposite, or randomly pick colors as it suits you!