Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.0543545538657
Darker point darker score: -0.140347836616
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3VPHHR5GLSQ7Q
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NQZHW4RY6IDR
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1OTE7CRHWUOGJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AHPLLAN8B13W2
darker: E (eq: True, dd: None), confidence: 2, worker: AMV1QZDL5K6PG
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3UIVQJXY62XU8
(0: guessing, 1: probably, 2: definitely)