Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: E
Darker method: C
Equal score: 0.385880229532
Darker point darker score: not computed since the judgement is "E"
darker: 1 (eq: False, dd: True), confidence: 2, worker: AVUB4GDC2GE48 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3N6C8962TXPVH
darker: E (eq: True, dd: None), confidence: 2, worker: AGDDGSV1IQ0Z4
darker: 1 (eq: False, dd: True), confidence: 0, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3RNCUQDU5AVEI
darker: E (eq: True, dd: None), confidence: 0, worker: A3TVDFJ22T1FFN (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A1XYJZ1AFNUURD
darker: E (eq: True, dd: None), confidence: 2, worker: A2MBCZMW1IBAK
(0: guessing, 1: probably, 2: definitely)