code: function (color, angle) {
  			var hsl, color0, color2;
  			if (!angle) {
  				angle = 30;
  			}
  			hsl = ColorHelper.rgbToHSL(color);
  			hsl[0] = (hsl[0] + angle) % 360;
  			color0 = ColorHelper.hslToHexColor(hsl);
  			color0 = ColorHelper.darken(color0, 8);
  			color0 = ColorHelper.saturate(color0, -6);
  			hsl = ColorHelper.rgbToHSL(color);
  			hsl[0] = (hsl[0] - angle + 360) % 360;
  			color2 = ColorHelper.hslToHexColor(hsl);
  			return [color0, color, color2];
  		}
docs: Two adjacent colors on 12-part color wheel