Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.249770826887
Darker point darker score: -0.0142886372103
darker: 1 (eq: False, dd: True), confidence: 1, worker: A2YUBS32Z1NI59
darker: 1 (eq: False, dd: True), confidence: 1, worker: ARW2F8HD8VOLX (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A14BFNH96MJQH
darker: 2 (eq: False, dd: False), confidence: 0, worker: A167L9XCC3KHPF
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1KH9UPH0D74QJ (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3QTG4DHHV2KD6
darker: E (eq: True, dd: None), confidence: 2, worker: AFO6OUDRVZ317
(0: guessing, 1: probably, 2: definitely)