Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.912806969758
Darker point darker score: -0.895797050411
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2YAM0NOL7EQNG
darker: 1 (eq: False, dd: False), confidence: 1, worker: A3RNCUQDU5AVEI
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2YUKCBFNE5RGL
darker: 1 (eq: False, dd: False), confidence: 2, worker: AE6N096CSI5HT
darker: 2 (eq: False, dd: True), confidence: 1, worker: A1WVOW92WZG8HP (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A32M5FDKCPHMA
(0: guessing, 1: probably, 2: definitely)