Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.132011898308
Darker point darker score: -0.0613295774733
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3E3QXLHXAGY4Y
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1QXQBZE7ROQ4F
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NQZHW4RY6IDR
darker: E (eq: True, dd: None), confidence: 2, worker: A1NM7ZPZ3NH412
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NQZHW4RY6IDR
darker: E (eq: True, dd: None), confidence: 2, worker: A10QRO2MWG7AZ7 (marked invalid)
(0: guessing, 1: probably, 2: definitely)