Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.933886496257
Darker point darker score: -0.204537573102
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1IJ5RKJ4MD2AM (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 1, worker: AX720MTAR52TX
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1KF93C9NTOP42
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3FVPDNQQLDFZH
darker: 2 (eq: False, dd: False), confidence: 2, worker: A37Q1701BQI3TI
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3FB1E807EN22S
darker: E (eq: True, dd: None), confidence: 2, worker: AU4FF0366TBAR (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2C5N3IQEP0KWA (marked invalid)
(0: guessing, 1: probably, 2: definitely)