afni.nimh.nih.gov

Hi Mahsa,

I will assume that you have values of 0, 1, 2 and 3.

In that case, change '**' at the bottom of the color
bar (just above the Pos? toggle button) to 4. Then
you can left-click on any of the 4 colors to set them
as you wish.

If necessary, you can also drag the color divider
bars around if the value spacing is not equal.

- rick