Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.894835982066
Darker point darker score: 0.943413710865
darker: 2 (eq: False, dd: True), confidence: 1, worker: A1CEPAN1MLYHSO
darker: 2 (eq: False, dd: True), confidence: 2, worker: A33A9M7SEUA9LG
darker: E (eq: True, dd: None), confidence: 2, worker: A35Y9YHW91OY2U (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 0, worker: A1IOJ2LGMGISYM
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3JKYHQMKDV1Y9
darker: 2 (eq: False, dd: True), confidence: 2, worker: AWL4VD8C90KJR (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2BG6O1B5B3F78
darker: 2 (eq: False, dd: True), confidence: 2, worker: ATPCAF2RU1G4C (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2TEWO3WJ5YKGG (marked invalid)
(0: guessing, 1: probably, 2: definitely)