Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.125772489231
Darker point darker score: -0.128074612069
darker: 2 (eq: False, dd: True), confidence: 2, worker: ARX0S1CIDJLOX
darker: 1 (eq: False, dd: False), confidence: 0, worker: A37Q1701BQI3TI
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3O8YXPG1HGUH0
darker: 2 (eq: False, dd: True), confidence: 1, worker: A2G053HOWRCZZ6 (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3A45A5YUM61LK
darker: E (eq: True, dd: None), confidence: 2, worker: A3163PFOUKXQKA
(0: guessing, 1: probably, 2: definitely)