Can Menu font be changed in Wireshark?

I am running a Wireshark binary on a Mac and find the Menu and Tab text to be set in too large a font size. Can this be changed without going to source code, please?

I asked this and later - just now, actually - found a 2008 suggestion on
http://diaryproducts.net/for/administrator/increase_wireshark_font_size_on_mac_os_x
which suggested

I tried this and tried changing gtk-font-name to e.g. “Courier 6” but gtkrc did nothing. Pre-gtkrc proved to be the place to mod and now Wireshark is far more pleasant to use. I am using Version 1.2.3 (SVN Rev 30730) on a Mac 10.6.x