Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.118208709177
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A2KJ983WWTEK4L
darker: 1 (eq: False, dd: True), confidence: 0, worker: A3I4NM85R4LN97
darker: E (eq: True, dd: None), confidence: 1, worker: A1AXG32WSJVY54
darker: 1 (eq: False, dd: True), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 1, worker: A1JEDFDBWHLA1F
darker: 2 (eq: False, dd: False), confidence: 0, worker: AKJ6IXN6XE7OQ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1CV8APDA7Y2PI
darker: 2 (eq: False, dd: False), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
(0: guessing, 1: probably, 2: definitely)