In WPF, the default scrollbars are boring light blue controls, however I noticed that Office 2007 has some really nice scrollbars with animated color transitions.
Does Microsoft provide these visually pleasing scrollbars in WPF? (Via a template or any other method)
No. The closest provided by Microsoft would be the themes in the WPF Toolkit. There are quite a few 3rd party options to get the Office 2007 styles in WPF applications, however.