[Freesurfer] Dense annotations

Hi, We're trying to create some customized annotations in matlab, and then write them out to an .annot file.

Some of these annotations are dense (e.g., ~1000 ROIs). However, if we defined more than 30 or so colours, tksufrer crashes.

Does this limit have something to do with what is specified in the colortable.orig_tab structure?

We simply read in the standard lh.aparc.annot output by freesurfer and made all the necessary changes before using write_annotation to create a new .annot file, but were not sure what to change the orig_tab field to so we left it blank. Do I need to change this to something else?

Thanks for your help, Alex