Changing the action button font object?

[Subere]

So I've been poking around for a while and have been unable to find a way to change the font object used for action buttons. I found where the action button is inheriting the font from the FrameXML template, but I haven't been able to figure out a way to change it.

Is the only way to change it buy looping through and changing it for each action button, or is there a quicker / cleaner way where I can just change the font object it's inheriting from template?

If anyone can help and point me in the right direction that'd be great. Thanks.

[Subere]

Can someone help me out and point me in the right direction? :s