Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.173546496331
Darker point darker score: -0.0271442640132
darker: 1 (eq: False, dd: False), confidence: 2, worker: A21AVVEQUEX7DA (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 0, worker: A19JD78JJXEW01
darker: 1 (eq: False, dd: False), confidence: 0, worker: A2OF0GTKWKM2T5
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3B0AB2C9SIHN
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1S7UPUHFVXX4Z
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2RUHINET2E1C5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
(0: guessing, 1: probably, 2: definitely)