Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.241556169567
Darker point darker score: 0.0476264884489
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3IIE0ASFPHDBN
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1JWOUVUL09Y8D (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2KJ983WWTEK4L
darker: 1 (eq: False, dd: False), confidence: 1, worker: AG0X3PQK2FWQJ
darker: E (eq: True, dd: None), confidence: 1, worker: A3799NWTIYKCEV
darker: 1 (eq: False, dd: False), confidence: 2, worker: AGO9QN7UEDUYL
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1DDY93NB8NESD
darker: E (eq: True, dd: None), confidence: 2, worker: AJSZEUBV1O00K (marked invalid)
(0: guessing, 1: probably, 2: definitely)