How can I change the font size of the project tree?

Hello guys,

I am on a 27'' iMac (OS X 10.7.3) at max resolution and so the default font sizes are generally tiny.

I enabled the 'Override Default fonts..'  setting in Appearance and increased the font size. This increased the font size of tabs which is good, but the project tree view's font size is still the same.

Thanks!
-cheenu