Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.886431967122
Darker point darker score: -0.88270474046
darker: E (eq: True, dd: None), confidence: 1, worker: A2TE84RMBCJ1B1 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1ZCYJOVB9YEOW (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A10QRO2MWG7AZ7
darker: 1 (eq: False, dd: False), confidence: 1, worker: A37Q1701BQI3TI
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A237FGJCPV99GJ
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1CV8APDA7Y2PI
darker: 1 (eq: False, dd: False), confidence: 2, worker: A32M5FDKCPHMA
(0: guessing, 1: probably, 2: definitely)