Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.0585627982588
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 0, worker: A1PGQZ8N5QB4F4 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1TKGFJSMVR2RP
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1TQYQG3VFJTWW
darker: 2 (eq: False, dd: False), confidence: 0, worker: A3UN57EC5AXY1Z
darker: 2 (eq: False, dd: False), confidence: 1, worker: AUD2Y1IOZ0GN4 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A23RB1Y4ANXQLS
darker: E (eq: True, dd: None), confidence: 2, worker: A2HCXQ6WTTL79C
(0: guessing, 1: probably, 2: definitely)