Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.0698893721544
Darker point darker score: -0.899599240217
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2KJ983WWTEK4L
darker: 2 (eq: False, dd: False), confidence: 0, worker: A1TKGFJSMVR2RP
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2KGL2FXIG2IQM (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A21VLTGNNJH43I
darker: 2 (eq: False, dd: False), confidence: 1, worker: AG0X3PQK2FWQJ
darker: E (eq: True, dd: None), confidence: 0, worker: A1IOJ2LGMGISYM
darker: 2 (eq: False, dd: False), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
(0: guessing, 1: probably, 2: definitely)