Interesting classroom activities are suggested: making a "fortune teller" (color cookie); experiencing a prism; making a color disk
; and experiencing a rainbow.
While a color disk set for classification is a useful tool, it should be used in conjunction with cupping to enhance the system's accuracy.
Speaking before a crowded audience at a seminar entitled; Roast Color Classification System Using the Agtron/SCAA Color Disks, Staub stated, "One of the many quality control challenges facing the specialty coffee roaster is consistency.
The C-O group (N = 15) learned pairs in which the sample was always a color disk
, and the comparisons were scented stimuli.