Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -1.06955393639
Darker point darker score: 0.542522895857
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3VKWFQA0KO1KB
darker: 1 (eq: False, dd: False), confidence: 2, worker: A3QLMSLL4AYTDT
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3GGE6TW2JXBEA (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2Q1A5H715C3EK
darker: 2 (eq: False, dd: True), confidence: 2, worker: A1OPUMTQBJ9A09
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2TTWBQFLFUCZ3
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2Z6WC0PX1L4UG (marked invalid)
(0: guessing, 1: probably, 2: definitely)