Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.886659661803
Darker point darker score: -0.0792768328474
darker: 2 (eq: False, dd: True), confidence: 2, worker: AR50UBGSH10FJ (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: ADN5X9XAX18JA
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3NWQ0535HAXUD
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3LSDO3YPF1SFT
darker: 1 (eq: False, dd: False), confidence: 2, worker: AEHEZAYCPWF0E
darker: E (eq: True, dd: None), confidence: 2, worker: ABWVRVG5B5OMX (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1IOJ2LGMGISYM
(0: guessing, 1: probably, 2: definitely)