Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.0772191540217
Darker point darker score: -0.027176750644
darker: 1 (eq: False, dd: False), confidence: 1, worker: A369RBYR7J9MH7 (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 0, worker: A2LVDFUMN11HAS (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A16B0PGF0CU0JV
darker: E (eq: True, dd: None), confidence: 0, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1LAC2M11NC968
darker: E (eq: True, dd: None), confidence: 1, worker: A1Y5DMCQYLVL74
darker: 1 (eq: False, dd: False), confidence: 0, worker: A1JHVZIC3FH9LG
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1IJ5RKJ4MD2AM (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3JJAFR9BRLG0
(0: guessing, 1: probably, 2: definitely)