Anatomy of the brain. The caudate nucleus, the putamen, the Globus pallidus (yellow), the fornix (green), the indusium griseum (dark green), the corpus callosum (light yellow), the thalamus (light blue), the hippocampus (purple), the amygdala (pink), the mammillary body (dark yellow), the hypothalamus (dark blue), the olfactory bulbs (light green), the optical nerves (orange), the cingulate cortex (blue).