Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.905015654279
Darker point darker score: -0.901724570815
darker: 1 (eq: False, dd: False), confidence: 1, worker: A3JB8CDV1SF2TH
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3760PCQD2MPIO
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: AKZ8SFOAI4RZN
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3GTIIFSMHAKRZ
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1NM7ZPZ3NH412
darker: 2 (eq: False, dd: True), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
(0: guessing, 1: probably, 2: definitely)