Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.163654524144
Darker point darker score: -0.0547602032934
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2Q1A5H715C3EK
darker: E (eq: True, dd: None), confidence: 0, worker: A3163PFOUKXQKA
darker: 1 (eq: False, dd: True), confidence: 2, worker: A360B58589TBUS (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 1, worker: A2LT5VXO2LS0UL
darker: 2 (eq: False, dd: False), confidence: 1, worker: A3NBD6P0INJB4G
darker: E (eq: True, dd: None), confidence: 2, worker: A1MQPBGSL800TL
(0: guessing, 1: probably, 2: definitely)