Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.18241601299
Darker point darker score: -0.988684200361
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1DRFDGG2KCOI2 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: AGY2PTZLZFT2L
darker: 2 (eq: False, dd: False), confidence: 1, worker: A3JB8CDV1SF2TH
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1LL128T7JNJ39
darker: E (eq: True, dd: None), confidence: 2, worker: A7114FTRGZMK2
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2JVJ7J2MVGW9S
(0: guessing, 1: probably, 2: definitely)