Hi,
For the circos, there is not yet an option for the color bar.
I can try to add that.
Also for the circos, you can adjust the font size indirectly by changing the image size:
https://afni.nimh.nih.gov/pub/dist/doc/htmldoc/tutorials/FATCAT_matplot/FATCAT_matplot.html#id19
For the both the circos and heatmap png, I can add an option for changing the font size.
It will take a bit of trial and error to get a size that works well if you have a lot of ROIs.
I'll reply to this post when I add those options. Hopefully this week...
Thanks, Justin