Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.0793906718126
Darker point darker score: 0.25279375418
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2H4ON6BUHMY1L (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3TO9R1Z7L6PZZ (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1RHI1ARUZZKGP
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2TP6GDF71HM4M
darker: 1 (eq: False, dd: False), confidence: 0, worker: A2Q27LZW3VNDIP
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3FVPDNQQLDFZH
darker: E (eq: True, dd: None), confidence: 2, worker: A3593PI95G678K
(0: guessing, 1: probably, 2: definitely)