Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.0567430459241
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A3LSDO3YPF1SFT
darker: E (eq: True, dd: None), confidence: 0, worker: A1DDY93NB8NESD
darker: 2 (eq: False, dd: False), confidence: 0, worker: A90QPQO48C6RX
darker: E (eq: True, dd: None), confidence: 1, worker: A2H321P1NSEW35
darker: E (eq: True, dd: None), confidence: 2, worker: A1IJ5RKJ4MD2AM (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: AH7WFV2TQYEW0 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 1, worker: A360B58589TBUS (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2CXAWVGQ6QQ2V
(0: guessing, 1: probably, 2: definitely)