Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.879898880754
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: AWL4VD8C90KJR (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2EKPA2DR5VSA8
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3UZV2WVMQO4Q9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2A42CU48PN8CX
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
darker: E (eq: True, dd: None), confidence: 2, worker: A3HIIRTGJUJZ1D
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
(0: guessing, 1: probably, 2: definitely)