Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.910396727136
Darker point darker score: -0.893793416136
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1OTE7CRHWUOGJ (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2XWHAVGMXTVMJ
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1QIZATKBF64SO
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NQZHW4RY6IDR
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2K9VAUQ9I7CLT
darker: 2 (eq: False, dd: False), confidence: 0, worker: A2OF0GTKWKM2T5
(0: guessing, 1: probably, 2: definitely)