Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.175008213826
Darker point darker score: 0.115052769995
darker: E (eq: True, dd: None), confidence: 2, worker: A8DFFGPH3G3V5
darker: 2 (eq: False, dd: True), confidence: 0, worker: A1NJB5LJJPC7AS
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1WP5F7NLRWLKW
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1ABA3S1BGNCWW
darker: 2 (eq: False, dd: True), confidence: 2, worker: A7PVOM63I6UH5 (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3IPKVTS5K06LP
darker: E (eq: True, dd: None), confidence: 2, worker: A15XHPD9NN0LU2
(0: guessing, 1: probably, 2: definitely)