If I want to freeview fully segmented grey matter, white matter, and Tracula outputs, are the following commands correct to the request?

# to visualize the segmented cortical outputs

freeview -v mri/aparc+aseg.mgz

Question: why is one hemisphere brighter than the other? How can I adjust so that they are equally bright?

# to visualize the segmented subcortical outputs

freeview -v mri/aseg.mgz

Question: why is only one hemisphere showing and how to add the other one?

$ to visualize AD. RD, FA and color-coded each 

freeview -v dmri/dtifit_FA.nii

Question: I cannot find the nifti outputs of AD and RD (however, the stats generated). where can I find it? Is there an example of how to color-code them for freeview?

Thank you!

Best, 

Jackie