Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.0823830645794
Darker point darker score: not computed since the judgement is "E"
darker: 2 (eq: False, dd: False), confidence: 1, worker: A3RLTUXIM8TU3K (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: AKG5TLUQ2WWED
darker: E (eq: True, dd: None), confidence: 0, worker: A29LON3TC6GCJN
darker: E (eq: True, dd: None), confidence: 2, worker: A1N4JP7BSPNF95
darker: E (eq: True, dd: None), confidence: 2, worker: A1136V0RZUR5TO
darker: E (eq: True, dd: None), confidence: 2, worker: A36XRHW6R8MU0C
(0: guessing, 1: probably, 2: definitely)