Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.0189195469407
Darker point darker score: 0.0823679164165
darker: 1 (eq: False, dd: False), confidence: 0, worker: A1DDY93NB8NESD
darker: 2 (eq: False, dd: True), confidence: 1, worker: A1PGQZ8N5QB4F4 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3HIIRTGJUJZ1D
darker: E (eq: True, dd: None), confidence: 1, worker: AEHEZAYCPWF0E
darker: E (eq: True, dd: None), confidence: 1, worker: A234WZ4KX8IW07
darker: E (eq: True, dd: None), confidence: 2, worker: AWO91BEOHNOJB
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1IJ5RKJ4MD2AM (marked invalid)
(0: guessing, 1: probably, 2: definitely)