The very best and easy solution is .-.-.-. (three letters)

Get it?

Pico has a set of templates.
Each clone has its own css
Each category can have its own css
Each page can have its own css

If you add a div with a "id" or "class" named "myheader"
you can easily specify in the css file of your clone/category/page
the design of "myheader" (background image, color, width, height, position, etc.)

I think we should pay Gijoe some beers,
because this module is really the greatest!
Name it "pico" was really the good choice.

Have Fun!