Text on the right side of the page! The color can be anything it has to be. To edit it, go to the Admin and choose Appearance > Widgets > in the right column "Showcase Widget" and then click the little arrow on the box labelled "Text Widget".
From there you can edit all of the text and styles for the box by the slideshow. The only problem is because of the structure of the theme, this will be the same for each page.