Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.448386494132
Darker point darker score: -1.03771547942
darker: 2 (eq: False, dd: False), confidence: 2, worker: AAC5XT7UY7B2K
darker: 2 (eq: False, dd: False), confidence: 1, worker: A234WZ4KX8IW07
darker: 1 (eq: False, dd: True), confidence: 0, worker: A3J83K797QJ6QO (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 1, worker: A2JVJ7J2MVGW9S
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2I0M1XXACA4WE (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3IPKVTS5K06LP
darker: E (eq: True, dd: None), confidence: 1, worker: A277RSAE4AKWW0
(0: guessing, 1: probably, 2: definitely)