Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.0587726063224
Darker point darker score: 0.924980131839
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3JJAFR9BRLG0
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2I0M1XXACA4WE (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 0, worker: A1NJB5LJJPC7AS
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2DNSD743W4OC2
darker: 2 (eq: False, dd: True), confidence: 2, worker: ATWGPR2A3M7WU (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3UC4JITM1QD1M
darker: E (eq: True, dd: None), confidence: 2, worker: A3QTG4DHHV2KD6
(0: guessing, 1: probably, 2: definitely)