Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.115683577291
Darker point darker score: 0.294985485693
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3760PCQD2MPIO
darker: 1 (eq: False, dd: False), confidence: 0, worker: A2YAM0NOL7EQNG
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1LAC2M11NC968
darker: 2 (eq: False, dd: True), confidence: 1, worker: AO6J6WQVRE5YZ (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1TIL0S71V1JA0
darker: E (eq: True, dd: None), confidence: 2, worker: A1IOJ2LGMGISYM
(0: guessing, 1: probably, 2: definitely)