E16 changing the Fonts Sizes

Hi,
I have managed to change font and font size in Preferences->Customize Look and Feel. Great!
But the font and font size of the window title is as it was, too small for me.
I followed your suggestion, got to Preferences->Elementary Configuration->Fonts, I picked my preferred font and font size for ‘Title Bar’, no changes.
Can you get me through changing font via terminal, in this particular case changing font and font size of Title Bar?