color theme (font)

Hi –

Is there a way to customize the color theme (mainly fonts)? On the demo, it was all black.

When I installed the theme, the following areas are in the Tiffany blue color:

– “Title” of the blog (Site Identity)
– “Categories” on top of the title of each posting
– Clickables such as “read more” (below about the author), “continue reading”
– Quotation mark inserts for highlighted texts
– Sidebar: “magnifying glasses” on the search widget

Many thanks in advance!