Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.0809530067337
Darker point darker score: -0.959504613028
darker: 2 (eq: False, dd: False), confidence: 2, worker: A168LFJNV9DSTS
darker: 2 (eq: False, dd: False), confidence: 1, worker: A29PBDDLQLP90O
darker: E (eq: True, dd: None), confidence: 1, worker: A32FVCCAYPTOD9
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2LVDFUMN11HAS (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1MQPBGSL800TL
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2CXAWVGQ6QQ2V
darker: E (eq: True, dd: None), confidence: 2, worker: A2SP7LV6H5D0HO
(0: guessing, 1: probably, 2: definitely)