Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.93599993283
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 1, worker: A1ZH2G3ICIOPT2 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A30M7MYW1BHQN1
darker: 1 (eq: False, dd: True), confidence: 1, worker: A3P9BBIGUZ53BX (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2SNX0RFIPIO60
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3PKLLRKQ7VUVN (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A23RB1Y4ANXQLS
darker: E (eq: True, dd: None), confidence: 2, worker: A3A45A5YUM61LK
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
(0: guessing, 1: probably, 2: definitely)