Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.0538478607926
Darker point darker score: -0.880332971966
darker: 2 (eq: False, dd: False), confidence: 1, worker: A4SP70BFBM4ZP
darker: 2 (eq: False, dd: False), confidence: 0, worker: A10QRO2MWG7AZ7
darker: 1 (eq: False, dd: True), confidence: 0, worker: AH8FQGOADPCST (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A26N0ZAW34UJUV
darker: E (eq: True, dd: None), confidence: 2, worker: A9Y1HKUEOOEPM
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1L3348HFKSWBJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1Y5DMCQYLVL74
(0: guessing, 1: probably, 2: definitely)