Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.285304230607
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A1SRPH3BGCHUOA
darker: 1 (eq: False, dd: True), confidence: 0, worker: A1TQYQG3VFJTWW
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1ZH2G3ICIOPT2 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3U65EZ76A3HCN
darker: 1 (eq: False, dd: True), confidence: 2, worker: AVUB4GDC2GE48 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3799NWTIYKCEV
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1KH9UPH0D74QJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3QTG4DHHV2KD6
darker: E (eq: True, dd: None), confidence: 2, worker: A1A50D6DABL6IK
(0: guessing, 1: probably, 2: definitely)