Fonts in Eternity

Where can I find the font’s that are been used in Eternity?

Maybe this is obvious and I’m just not ‘in the know’ but… what’s ‘eternity’? Is it some kind of site, product?

I want to change the font for the page headers (title of the pages)

Ok then, well the page you’ve linked to is the place to be as the author is the best person to help you with that… either through that support page, the items comments section or the contact box on the authors profile page.