Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.329426486413
Darker point darker score: 0.893179457642
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3QW1C79IH4GOG
darker: 2 (eq: False, dd: True), confidence: 2, worker: A14MXJ8GNYDWX1
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2RUHINET2E1C5 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1IOJ2LGMGISYM
darker: E (eq: True, dd: None), confidence: 2, worker: A7S0IDTDA59QN
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3UC4JITM1QD1M
(0: guessing, 1: probably, 2: definitely)