Justa a newbie question

Hi, i′m a newbie in the WordPress appz. I′m just testing for a full migration of ExpressionEngine to WordPress (this version 2.02 is amazing!!!).
And my only question about this is:

Can i have a different theme (or graphic template) for every section (or category) in my site?. Its possible?

For example, in my homepage, the layout is black with the header 1. In Products, the layout is blue, with the header 2, in my contacts, the layout is green with the header 3…
This is many easy in Expression Engine. It′s possible make this in wordPress? Or install various theme variatons for any desired section?

Anyone have a tutorial?

Best regards,

Bharrabhaz