Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.888352409669
Darker point darker score: 0.0222268067147
darker: 2 (eq: False, dd: True), confidence: 1, worker: AVQ23YRFWZKHH (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3N6C8962TXPVH
darker: 2 (eq: False, dd: True), confidence: 1, worker: A1CV8APDA7Y2PI
darker: 1 (eq: False, dd: False), confidence: 1, worker: A1JEDFDBWHLA1F
darker: 1 (eq: False, dd: False), confidence: 0, worker: A3S8HNGZ7BN1I6
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2SNX0RFIPIO60
(0: guessing, 1: probably, 2: definitely)