How do I change the default font for comment boxes in Keynote I am using Keynote '09 and whenever I create a comment, it is formatted in Marker Felt 16. I want to change that to something like Arial 20. How can I do it?

I tried to apply the point 5 in this answer, namely to create a comment in the master, format it and then select it and choose Format > Advanced > Define Text for All Masters. However Define Text for All Masters is greyed out for comments boxes.

Any other ideas?
This applies to Keynote 09 (5.3):


Create a comment on a master page, style as you wish.
With the comment selected, choose Format > Advanced > Define Comment for
all Masters
You may now even delete the comment on your master page.
New comments in the presentation will still be in the chosen format.


Hope this helps!