Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.270993719433
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 2, worker: A2A1D52ZPSW6L9
darker: E (eq: True, dd: None), confidence: 2, worker: A2RLY0MUZQ1R1G (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A251KVXCS8E3C
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3NUDHU0ZTFI8H (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2CXAWVGQ6QQ2V
darker: E (eq: True, dd: None), confidence: 2, worker: A2CXAWVGQ6QQ2V
darker: E (eq: True, dd: None), confidence: 2, worker: A1NZVXB0S8DR04
(0: guessing, 1: probably, 2: definitely)