Excerpt from: Http://www.asp.net/visual-studio/overview/2013/creating-web-projects-in-visual-studio#bootstrap
You can also use Bootstrap's theming feature to easily effect a change in the application's look and feel. For example, your can do the following steps to change the theme.
- In your browser, go to http://Bootswatch.com, choose a theme, and then click Download. (This downloadsbootstrap.min.css by default; If you want to examine the CSS code, get bootstrap.css Inst EAD of the minified version.)
- Copy the contents of the downloaded CSS file.
- In Visual Studio, create a new Style Sheet file named bootstrap-theme.css in the Content folder and paste the downloaded CSS code into it.
- Open app_start/bundle.config and change bootstrap.css to bootstrap-theme.css.
Run the project again, and the application have a new look. The following illustration shows the effect of the Amelia theme:
Many Bootstrap themes is available, both free and premium versions. Bootstrap also offers a wide variety of UI components, such as drop-downs, button groups, and icons. For more information about Bootstrap, see the Bootstrap site.
If you use the Web Forms designer in Visual Studio, note this designer doesn ' t support CSS3, so it doesn ' t accurately Show all the effects of Bootstrap themes or responsive layout changes. However, the Web Forms pages would display correctly when viewed with a browser.
Change Bootstrap Theme Color