Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -0.170673865377
Darker point darker score: 0.940811881844
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1QIZATKBF64SO
darker: 1 (eq: False, dd: True), confidence: 1, worker: A1XX6ZVVS2UTO7 (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A3Q9S2K93W2KDI (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: ALY6VKHUADU6F
darker: E (eq: True, dd: None), confidence: 2, worker: A2VVSQ1PSXKGVE
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2K9VAUQ9I7CLT
darker: E (eq: True, dd: None), confidence: 2, worker: A2YYHNACJ8MFTU
darker: 1 (eq: False, dd: True), confidence: 2, worker: AEHEZAYCPWF0E
(0: guessing, 1: probably, 2: definitely)