Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -0.0995772295459
Darker point darker score: 0.0475822524348
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3VLWJYR99R66D
darker: 1 (eq: False, dd: True), confidence: 0, worker: A1RU9BQLDZ1DSY (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2S9J5W3VOD0M6
darker: 1 (eq: False, dd: True), confidence: 1, worker: A3GFISRU6V2MG5
darker: E (eq: True, dd: None), confidence: 2, worker: A3IPKVTS5K06LP
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A32M5FDKCPHMA
(0: guessing, 1: probably, 2: definitely)