Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.158870472428
Darker point darker score: 0.144242167047
darker: 2 (eq: False, dd: True), confidence: 1, worker: A168LFJNV9DSTS
darker: 2 (eq: False, dd: True), confidence: 1, worker: A37Q1701BQI3TI
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1ZCYJOVB9YEOW (marked invalid)
darker: 1 (eq: False, dd: False), confidence: 2, worker: A1N274L13ZKKI5
darker: 2 (eq: False, dd: True), confidence: 2, worker: AKG5TLUQ2WWED
darker: E (eq: True, dd: None), confidence: 2, worker: A2VVSQ1PSXKGVE
(0: guessing, 1: probably, 2: definitely)