Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.35437343254
Darker point darker score: 0.223152418623
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1NJB5LJJPC7AS
darker: 2 (eq: False, dd: True), confidence: 0, worker: A3TVDFJ22T1FFN (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2LT5VXO2LS0UL
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3QTG4DHHV2KD6
darker: 1 (eq: False, dd: False), confidence: 0, worker: AUKFRW1LVWIZ8
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A15XHPD9NN0LU2
darker: E (eq: True, dd: None), confidence: 2, worker: A35Y9YHW91OY2U (marked invalid)
(0: guessing, 1: probably, 2: definitely)