Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.138901986331
Darker point darker score: 0.0507849666934
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1NJMUQIN7L8AD
darker: 1 (eq: False, dd: False), confidence: 1, worker: A3LNPBZXHKKAA7
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1KWFRKBCLPQXZ (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A8MF3Y278EWK2
darker: 2 (eq: False, dd: True), confidence: 2, worker: AE6N096CSI5HT
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3UIVQJXY62XU8
(0: guessing, 1: probably, 2: definitely)