Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.886910116424
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: AQD91RFHV1WNE (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AGDDGSV1IQ0Z4
darker: E (eq: True, dd: None), confidence: 2, worker: A8DFFGPH3G3V5
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
darker: E (eq: True, dd: None), confidence: 2, worker: AZX5II1VFIK4R
darker: E (eq: True, dd: None), confidence: 2, worker: A3B58QWMTBXVE0
(0: guessing, 1: probably, 2: definitely)