Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.031281940481
Darker point darker score: -0.98242650377
darker: 2 (eq: False, dd: False), confidence: 1, worker: A3JB8CDV1SF2TH
darker: 2 (eq: False, dd: False), confidence: 0, worker: A35WUJZ4RJNZFX
darker: E (eq: True, dd: None), confidence: 2, worker: A1TQYQG3VFJTWW
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1K3QJM1Q770Y (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3VEMG1EEBJHWD
darker: E (eq: True, dd: None), confidence: 2, worker: AH5A4HC68V57W (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2A42CU48PN8CX
(0: guessing, 1: probably, 2: definitely)