Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.184746739673
Darker point darker score: -0.936905827739
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1ZCYJOVB9YEOW (marked invalid)
darker: E (eq: True, dd: None), confidence: 1, worker: A1AXIY3LLO186R
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2YYHNACJ8MFTU
darker: 2 (eq: False, dd: False), confidence: 2, worker: A3163PFOUKXQKA
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1JEDFDBWHLA1F
darker: 2 (eq: False, dd: False), confidence: 2, worker: A1GY0P2ZEJ1RK7
(0: guessing, 1: probably, 2: definitely)