Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.918597136199
Darker point darker score: -0.980527504172
darker: 1 (eq: False, dd: True), confidence: 2, worker: A7PVOM63I6UH5 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1IX44UFXFW0ZY
darker: 2 (eq: False, dd: False), confidence: 2, worker: A12DV2RIAQPV5J
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3FVPDNQQLDFZH
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1JHVZIC3FH9LG
darker: 2 (eq: False, dd: False), confidence: 0, worker: A1JHVZIC3FH9LG
(0: guessing, 1: probably, 2: definitely)