Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.00913625498161
Darker point darker score: -0.879732118354
darker: 2 (eq: False, dd: True), confidence: 1, worker: ABWVRVG5B5OMX (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 0, worker: A3UC4JITM1QD1M
darker: E (eq: True, dd: None), confidence: 2, worker: A27H0BKXDPJ543
darker: 2 (eq: False, dd: True), confidence: 1, worker: A1PGQZ8N5QB4F4 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: AUJ3E2LEXUU10
darker: E (eq: True, dd: None), confidence: 2, worker: A3PF1VER45OVPM
darker: 1 (eq: False, dd: False), confidence: 0, worker: A12ABO48ZV09LR (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1MQPBGSL800TL
(0: guessing, 1: probably, 2: definitely)