Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.192079677297
Darker point darker score: -0.231968634645
darker: 1 (eq: False, dd: True), confidence: 0, worker: A1TQYQG3VFJTWW
darker: 2 (eq: False, dd: False), confidence: 2, worker: AF8M0GI3M45B8
darker: 2 (eq: False, dd: False), confidence: 2, worker: A22BAUES1TIZS6
darker: 1 (eq: False, dd: True), confidence: 2, worker: AQD91RFHV1WNE (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2P3JDCCY0EH5G
darker: E (eq: True, dd: None), confidence: 2, worker: A1TQ7UQSSQP7BD (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3RZMD0GPKZBJ5
(0: guessing, 1: probably, 2: definitely)