Font size feedback for new wpmu theme

Hi, I like this new, blue, wpmu support theme, thanks. Is there a way to change the font size for my display of this wpmu site? The font looks like 24 or greater, which feels less interactive for me as a forum user because fewer content shows on my screen. Think how much less engaging Facebook would be like if the newsfeed only had real estate space to display 3 items at a time...