Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.170853363346
Darker point darker score: 0.894842167501
darker: 2 (eq: False, dd: True), confidence: 1, worker: A1NO4LG6KGOGFD
darker: 2 (eq: False, dd: True), confidence: 1, worker: A2TP6GDF71HM4M
darker: 2 (eq: False, dd: True), confidence: 2, worker: A14MXJ8GNYDWX1
darker: 2 (eq: False, dd: True), confidence: 2, worker: A20HBLXCTOG7MI (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2TE84RMBCJ1B1 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: AQD91RFHV1WNE (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 0, worker: A3IPKVTS5K06LP
darker: E (eq: True, dd: None), confidence: 1, worker: A1KF93C9NTOP42
(0: guessing, 1: probably, 2: definitely)