Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.918980288365
Darker point darker score: 0.963538189798
darker: 2 (eq: False, dd: True), confidence: 2, worker: A13BDQ7J8MNP40
darker: 2 (eq: False, dd: True), confidence: 1, worker: A26N0ZAW34UJUV
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1I4YHF7RG58DV
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3HFS9E2FHNXDR
darker: 2 (eq: False, dd: True), confidence: 2, worker: A7PVOM63I6UH5 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A90QPQO48C6RX
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
(0: guessing, 1: probably, 2: definitely)