Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.106521609207
Darker point darker score: -0.897519340801
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3IPKVTS5K06LP
darker: 2 (eq: False, dd: False), confidence: 0, worker: A2OF0GTKWKM2T5
darker: E (eq: True, dd: None), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2VVSQ1PSXKGVE
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3RZMD0GPKZBJ5
darker: 2 (eq: False, dd: False), confidence: 1, worker: A3RLTUXIM8TU3K (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AKLZPOBB3YA33
(0: guessing, 1: probably, 2: definitely)