I figured out how to change the RGB values using copy/paste from excel files I already had for each ABA label (attached), but I guess I didn't think it through entirely. Even though I now get ABA RGB values at a high level of anatomical granularity for the Visualign *nl.png outputs, the greyscale version doesn't match ABA labels (which is my goal here). Any tips on getting the visualign outputs to give me .png images with atlas labels instead of RGB values?

Thanks!