Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -0.0211136050673
Darker point darker score: 0.879732375181
darker: 1 (eq: False, dd: True), confidence: 1, worker: A3QW1C79IH4GOG
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2FQSVTAOL5GUC
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2TE84RMBCJ1B1 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2D6GU31XFG5LY
darker: E (eq: True, dd: None), confidence: 1, worker: A26N0ZAW34UJUV
darker: E (eq: True, dd: None), confidence: 2, worker: A3P8OM5PDCFZNE
(0: guessing, 1: probably, 2: definitely)