Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.0318620575811
Darker point darker score: -0.166443569553
darker: 2 (eq: False, dd: False), confidence: 1, worker: A3IPKVTS5K06LP
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1F63T5BG7QIL7
darker: E (eq: True, dd: None), confidence: 1, worker: AO1T9KG7VR0P5
darker: E (eq: True, dd: None), confidence: 2, worker: AGO9QN7UEDUYL
darker: E (eq: True, dd: None), confidence: 2, worker: ATWGPR2A3M7WU (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2A42CU48PN8CX
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1136V0RZUR5TO
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
darker: E (eq: True, dd: None), confidence: 2, worker: A1GVN53BJRWKD2
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3QJ53C8CUTJTS (marked invalid)
(0: guessing, 1: probably, 2: definitely)