This is a great resource:
https://wiki.archlinux.org/index.php/GNOME
See: https://wiki.archlinux.org/index.php/GNOME#Reduce_title_bar_...
But the tweak tool lets you change the font size which was enough for me. I also installed htitle to firefox to hide the title bar when full screen.
Thank you! I will give it a go.
Keep in mind a few of the commands only relate to arch linux, but I think if you're comfortable using the terminal you should be able to figure things out.
The header bars finally see more use in 3.12; for Firefox, I'd recommend something like HTile, which removes the header when it's maximized.
Re:Ubuntu 14.04 LTS
by sandGorgon on Friday April 18, 2014 @02:50PM
(#7610627)
there you go - https://extensions.gnome.org/extension/354/maximus/
FTFY
Example: http://i.imgur.com/bKGyEo3.png