Configure font and font size

How do you configure the font face and font size for UNA.

I made a new MIX and changed the font face and sizes there, but, now UNA is a mishmash of font faces.

Most UNA text comes out in 'Helvetica Neue' ,sans-serif. 

I grep'ed the source and the fonts are hard coded all over the place.  Is there some script that is used to globally configure the font face.

Also, we want to generally increase the font size for most elements.   Again, we increased the sizes in the MIX file and those elements look good.   But, again, much of the UNA text size seems hard coded.

Is there a script that globally changes that as well?