Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.948096553657
Darker point darker score: 0.993453539073
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1TM1ZFU4OIPTD
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1PDSVMUP0CHRP
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3S8HNGZ7BN1I6
darker: 2 (eq: False, dd: True), confidence: 2, worker: AIKBREX7SEPXE
darker: E (eq: True, dd: None), confidence: 2, worker: A37TNFY6Z2X3XX (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A16S5BHQX20Y5A
(0: guessing, 1: probably, 2: definitely)