index red green blue opacity thing name 1 249 255 248 1.0 1 CSF 2 0 150 255 1.0 1 Cortical gray matter 3 255 200 0 1.0 1 White matter 4 0 239 255 1.0 1 Background 5 255 147 0 1.0 1 Ventricles 6 119 0 175 1.0 1 Cerebellum 7 231 239 0 1.0 1 Deep Gray Matter 8 208 0 255 0.36 1 Brainstem 9 0 80 58 1.0 1 Hippocampi and Amygdala