Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -1.04626374289
Darker point darker score: 0.943427041732
darker: 1 (eq: False, dd: True), confidence: 1, worker: A3O8YXPG1HGUH0
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2FQSVTAOL5GUC
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2Q1A5H715C3EK
darker: 1 (eq: False, dd: True), confidence: 1, worker: A234WZ4KX8IW07
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3PIU3R3IE6VDW
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
(0: guessing, 1: probably, 2: definitely)