Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.10238129572
Darker point darker score: 0.36439572279
darker: 2 (eq: False, dd: True), confidence: 2, worker: A7PVOM63I6UH5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A3IPKVTS5K06LP
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3UIVQJXY62XU8
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2TP6GDF71HM4M
darker: 2 (eq: False, dd: True), confidence: 0, worker: A2DYG62TXKP65Z
darker: 2 (eq: False, dd: True), confidence: 1, worker: AE6N096CSI5HT
(0: guessing, 1: probably, 2: definitely)