Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -0.175756157668
Darker point darker score: 0.95035152838
darker: 1 (eq: False, dd: True), confidence: 1, worker: A2S9J5W3VOD0M6
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3R5MEKMYYM2JX
darker: E (eq: True, dd: None), confidence: 0, worker: A1GM94HPPS4SS0
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1DRFDGG2KCOI2 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: A390HYGLCX40HE
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1DDY93NB8NESD
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3KUGXG2Y6X7BD
darker: 1 (eq: False, dd: True), confidence: 2, worker: A3NWQ0535HAXUD
(0: guessing, 1: probably, 2: definitely)