Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.892346568134
Darker point darker score: 1.03228700119
darker: 2 (eq: False, dd: True), confidence: 0, worker: A2H4ON6BUHMY1L (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1KITOCUU7GERN
darker: 2 (eq: False, dd: True), confidence: 1, worker: A3RNCUQDU5AVEI
darker: 2 (eq: False, dd: True), confidence: 0, worker: A1HJHY8RW8BJ27
darker: 2 (eq: False, dd: True), confidence: 2, worker: ASOOONBGQ48YI
darker: 2 (eq: False, dd: True), confidence: 1, worker: A7114FTRGZMK2
(0: guessing, 1: probably, 2: definitely)