Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.991905896727
Darker point darker score: 0.999354906506
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3QTG4DHHV2KD6
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3S8HNGZ7BN1I6
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1QK90OHMNVT6N
darker: 2 (eq: False, dd: True), confidence: 2, worker: ATWGPR2A3M7WU (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1LAC2M11NC968
darker: 2 (eq: False, dd: True), confidence: 2, worker: A7S0IDTDA59QN
(0: guessing, 1: probably, 2: definitely)