Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.0267153674764
Darker point darker score: 0.251469358817
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1NQZHW4RY6IDR
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3O8YXPG1HGUH0
darker: 1 (eq: False, dd: False), confidence: 1, worker: A13QL2FY4BZR9B
darker: 2 (eq: False, dd: True), confidence: 1, worker: A1OTE7CRHWUOGJ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A106ZSJP3CLBE4
darker: 2 (eq: False, dd: True), confidence: 2, worker: A10QRO2MWG7AZ7
(0: guessing, 1: probably, 2: definitely)