Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.149770808503
Darker point darker score: 0.0348799996036
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2SXYRKIP3J9CJ
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1DRFDGG2KCOI2 (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: AE6N096CSI5HT
darker: E (eq: True, dd: None), confidence: 1, worker: A1KF93C9NTOP42
darker: 1 (eq: False, dd: False), confidence: 1, worker: A237FGJCPV99GJ
darker: 1 (eq: False, dd: False), confidence: 2, worker: ANE1T9B3JJAS5
(0: guessing, 1: probably, 2: definitely)