Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.176859627363
Darker point darker score: 0.927119480787
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1CEPAN1MLYHSO
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3163PFOUKXQKA
darker: E (eq: True, dd: None), confidence: 2, worker: AWL4VD8C90KJR (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2HN49IR90P3LR
darker: E (eq: True, dd: None), confidence: 2, worker: A7S0IDTDA59QN
darker: E (eq: True, dd: None), confidence: 2, worker: A27H0BKXDPJ543
darker: E (eq: True, dd: None), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
(0: guessing, 1: probably, 2: definitely)