Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.0303665939731
Darker point darker score: 0.941797389438
darker: 2 (eq: False, dd: True), confidence: 2, worker: AH8FQGOADPCST (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A14S7A62C87LTI
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2KJ983WWTEK4L
darker: 2 (eq: False, dd: True), confidence: 0, worker: AZX5II1VFIK4R
darker: 2 (eq: False, dd: True), confidence: 2, worker: A7S0IDTDA59QN
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
(0: guessing, 1: probably, 2: definitely)