Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.171781443352
Darker point darker score: 0.891254787135
darker: E (eq: True, dd: None), confidence: 0, worker: A3163PFOUKXQKA
darker: 1 (eq: False, dd: False), confidence: 1, worker: AVQ23YRFWZKHH (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3LNPBZXHKKAA7
darker: 2 (eq: False, dd: True), confidence: 1, worker: ATN5M0LQEEYGU
darker: 2 (eq: False, dd: True), confidence: 2, worker: AH7WFV2TQYEW0 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1CV8APDA7Y2PI
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1WRANKL1HRGYW
(0: guessing, 1: probably, 2: definitely)