Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.245350689913
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: AH7WFV2TQYEW0 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A14HW8I4RYHNC4
darker: E (eq: True, dd: None), confidence: 2, worker: A3LSDO3YPF1SFT
darker: E (eq: True, dd: None), confidence: 0, worker: A36XRHW6R8MU0C
darker: E (eq: True, dd: None), confidence: 2, worker: A3A45A5YUM61LK
darker: E (eq: True, dd: None), confidence: 2, worker: A3IPKVTS5K06LP
(0: guessing, 1: probably, 2: definitely)