Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -0.20411800641
Darker point darker score: 0.236663488494
darker: 1 (eq: False, dd: True), confidence: 0, worker: A3V3O547GWAZID
darker: 1 (eq: False, dd: True), confidence: 2, worker: AI0LPDLUHKFMT (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A12DV2RIAQPV5J
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NX9Q0EAOPYN3
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1TQ7UQSSQP7BD (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A27H0BKXDPJ543
darker: 1 (eq: False, dd: True), confidence: 0, worker: A1136V0RZUR5TO
(0: guessing, 1: probably, 2: definitely)