Red point: darker
Green point: lighter
Blue point: equal
Darker point: 1
Darker reflectance: 2
Darker method: C
Equal score: -0.996799403388
Darker point darker score: -0.348052132508
darker: 1 (eq: False, dd: True), confidence: 1, worker: A251KVXCS8E3C
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1QK90OHMNVT6N
darker: 2 (eq: False, dd: False), confidence: 2, worker: A7S0IDTDA59QN
darker: 2 (eq: False, dd: False), confidence: 2, worker: A39SAJGZKMYJE9 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 2, worker: A167L9XCC3KHPF
darker: 2 (eq: False, dd: False), confidence: 2, worker: A2RUHINET2E1C5 (marked invalid)
darker: 2 (eq: False, dd: False), confidence: 1, worker: A1NM7ZPZ3NH412
(0: guessing, 1: probably, 2: definitely)