Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 1
Darker method: C
Equal score: -0.0580452070534
Darker point darker score: -0.0937170738325
darker: 2 (eq: False, dd: True), confidence: 1, worker: A2TE84RMBCJ1B1 (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A1NO4LG6KGOGFD
darker: 1 (eq: False, dd: False), confidence: 2, worker: A23RB1Y4ANXQLS
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1NZVXB0S8DR04
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1NJMUQIN7L8AD
darker: E (eq: True, dd: None), confidence: 1, worker: A167L9XCC3KHPF
darker: 2 (eq: False, dd: True), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: E (eq: True, dd: None), confidence: 0, worker: A18YH2N9M2P95T (marked invalid)
(0: guessing, 1: probably, 2: definitely)