Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.636154473615
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: AQD91RFHV1WNE (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1DU0G52OTCO5K
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2XU16B4I9XQG5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1QXQBZE7ROQ4F
darker: E (eq: True, dd: None), confidence: 2, worker: AE6N096CSI5HT
darker: E (eq: True, dd: None), confidence: 2, worker: A3JJAFR9BRLG0
darker: E (eq: True, dd: None), confidence: 1, worker: A26N0ZAW34UJUV
(0: guessing, 1: probably, 2: definitely)