Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.892614892861
Darker point darker score: 0.930063464518
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3VEMG1EEBJHWD
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3QTG4DHHV2KD6
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3IPKVTS5K06LP
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A23RB1Y4ANXQLS
darker: 2 (eq: False, dd: True), confidence: 1, worker: A2UKHWMBWV7LLU
(0: guessing, 1: probably, 2: definitely)