Red point: darker
Green point: lighter
Blue point: equal
Darker point: 2
Darker reflectance: 2
Darker method: C
Equal score: -0.148266912579
Darker point darker score: 0.302520356337
darker: 2 (eq: False, dd: True), confidence: 2, worker: A2925T8JYCYNN3 (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3QW1C79IH4GOG
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2EPRPJA681I8X
darker: E (eq: True, dd: None), confidence: 2, worker: A3QTG4DHHV2KD6
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3RZMD0GPKZBJ5
darker: 1 (eq: False, dd: False), confidence: 2, worker: A2BELXEEQTFLXE (marked invalid)
darker: 2 (eq: False, dd: True), confidence: 2, worker: A3IPKVTS5K06LP
(0: guessing, 1: probably, 2: definitely)