Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 1
Darker method: C
Equal score: -1.03616782565
Darker point darker score: 0.267691538834
darker: 1 (eq: False, dd: True), confidence: 2, worker: A1ITTM18PQP5X8
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2D6GU31XFG5LY
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2K4WWF11Q0R9W
darker: 1 (eq: False, dd: True), confidence: 2, worker: A2XU16B4I9XQG5 (marked invalid)
darker: 1 (eq: False, dd: True), confidence: 2, worker: APWBUB0PDRLS5
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2VVSQ1PSXKGVE
(0: guessing, 1: probably, 2: definitely)