Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.0143809664232
Darker point darker score: 0.944778726876
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3RLTUXIM8TU3K (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1I4YHF7RG58DV
darker: 2 (eq: False, dd: True), confidence: 2, worker: A251KVXCS8E3C
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3TVDFJ22T1FFN (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3LSDO3YPF1SFT
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1F4MP6YOIC1IV
darker: E (eq: True, dd: None), confidence: 2, worker: A36XRHW6R8MU0C
(0: guessing, 1: probably, 2: definitely)