Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.923912554134
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A3DHYTZ1GPN0T8
darker: 1 (eq: False, dd: True), confidence: 0, worker: A1DLY5ZY1C1A6V (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A10JX6DEWFJ6Z
darker: E (eq: True, dd: None), confidence: 2, worker: A1A50D6DABL6IK
darker: 1 (eq: False, dd: True), confidence: 2, worker: AO2JIXLS5MIC5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1HZWAX6XQXIM7
darker: E (eq: True, dd: None), confidence: 0, worker: ASOOONBGQ48YI
(0: guessing, 1: probably, 2: definitely)