Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -0.242259491294
Darker point darker score: 0.125989265069
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3RQN5RZD1N2KP
darker: 2 (eq: False, dd: False), confidence: 1, worker: A66EDJGYY7JV8
darker: 1 (eq: False, dd: True), confidence: 2, worker: A10QRO2MWG7AZ7
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NX9Q0EAOPYN3
darker: E (eq: True, dd: None), confidence: 1, worker: AUJ3E2LEXUU10
(0: guessing, 1: probably, 2: definitely)