Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.158718097577
Darker point darker score: -0.0367976976176
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3HPVFAF1U9WXK
darker: E (eq: True, dd: None), confidence: 2, worker: AGY2PTZLZFT2L
darker: 1 (eq: False, dd: False), confidence: 1, worker: A26N0ZAW34UJUV
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3P8OM5PDCFZNE
darker: E (eq: True, dd: None), confidence: 2, worker: A2VVSQ1PSXKGVE
(0: guessing, 1: probably, 2: definitely)