Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.24537764193
Darker point darker score: 0.904441046178
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1NF6PELRKACS9
darker: 2 (eq: False, dd: True), confidence: 1, worker: AKHVTWTHW5VID
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3O8YXPG1HGUH0
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3S6JT56CCUSE2 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3FVPDNQQLDFZH
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2A42CU48PN8CX
darker: 1 (eq: False, dd: False), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2EY9GDVA7L8YM (marked invalid)
(0: guessing, 1: probably, 2: definitely)