Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: E
Darker method: C
Equal score: 0.269733663497
Darker point darker score: not computed since the judgement is "E"
darker: E (eq: True, dd: None), confidence: 0, worker: A3QW1C79IH4GOG
darker: 1 (eq: False, dd: False), confidence: 1, worker: A3RLTUXIM8TU3K (marked invalid)
darker: E (eq: True, dd: None), confidence: 2, worker: A2EKPA2DR5VSA8
darker: 1 (eq: False, dd: False), confidence: 2, worker: AE6N096CSI5HT
darker: E (eq: True, dd: None), confidence: 2, worker: A1E9VI5RSZI31F
darker: E (eq: True, dd: None), confidence: 2, worker: A7S0IDTDA59QN
(0: guessing, 1: probably, 2: definitely)