Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.158376485082
Darker point darker score: -0.284357185337
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2S9J5W3VOD0M6
darker: 1 (eq: False, dd: True), confidence: 2, worker: A37JK3E3WOIGG2
darker: 2 (eq: False, dd: False), confidence: 2, worker: ARTQWWNFA7IOD
darker: E (eq: True, dd: None), confidence: 2, worker: A1KITOCUU7GERN
darker: 2 (eq: False, dd: False), confidence: 2, worker: ATWGPR2A3M7WU (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1KITOCUU7GERN
darker: 2 (eq: False, dd: False), confidence: 0, worker: A1Z3RPPYNUUT0Z
darker: E (eq: True, dd: None), confidence: 1, worker: A1WVOW92WZG8HP (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A7S0IDTDA59QN
(0: guessing, 1: probably, 2: definitely)