Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.0663153654739
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: False), confidence: 2, worker: A251KVXCS8E3C
darker: E (eq: True, dd: None), confidence: 0, worker: A356FSW4GNH609 (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1N274L13ZKKI5
darker: E (eq: True, dd: None), confidence: 1, worker: A179VVX2QGAJK0
darker: E (eq: True, dd: None), confidence: 2, worker: A1TM1ZFU4OIPTD
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2CXAWVGQ6QQ2V
(0: guessing, 1: probably, 2: definitely)