Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -0.235646707137
Darker point darker score: 0.256511374459
darker: E (eq: True, dd: None), confidence: 0, worker: A3799NWTIYKCEV
darker: 1 (eq: False, dd: True), confidence: 2, worker: ATWGPR2A3M7WU (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3MWV912LNFD67
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1I4YHF7RG58DV
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3B7AUU8YUZ4PZ (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3I8UKYNJHCEAH
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1NX9Q0EAOPYN3
(0: guessing, 1: probably, 2: definitely)