Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.614870826991
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: A2XU16B4I9XQG5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A258PTOZ3D2TQR
darker: E (eq: True, dd: None), confidence: 2, worker: A3R5MEKMYYM2JX
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1DU0G52OTCO5K
darker: E (eq: True, dd: None), confidence: 2, worker: AGO9QN7UEDUYL
darker: E (eq: True, dd: None), confidence: 2, worker: A3P8OM5PDCFZNE
darker: E (eq: True, dd: None), confidence: 0, worker: A1ZGOZQF2VZ0X9 (marked invalid)
(0: guessing, 1: probably, 2: definitely)