Hi Marlene,
The issue was reported previously and was resolved in version 3.0.1 and reported in the changelog. So hopefully just doing a macro version update should resolve the issue without necessitating manual editing of files locally.
So I guess the lesson is to be careful where you get the FreeSurferColorLUT.txt file - seem to be slightly different versions floating around.
Yes, I’ve observed the same myself also. But it was recently pointed out to me that the FreeSurfer code is now on GitHub, which means that e.g. you could download the LUT for any version tag of interest directly.
Rob