2.5.27 header fonts

[D Josiah Boothby]

How would I change the font in the header? And is it possible to use 
Palatino (or URW Palladio, as it may be called)? Where would I look to 
find this?

Currently I'm doing it by overriding the font in individual text markups, 
but this feels slow:

\header {
    title = \markup { \override #'(font-name . "Times New Roman")
        { This is my Title } }
    composer = \markup { \override #'(font-name . "Times New Roman")
        { Vera Beets } }
}

And related, if I want finer control of the header, should I just use 
latex/lilypond-book?

Josiah