XamlColorPreview

This is a free Visual Studio 2012 extension that draws a colored box under colors in hexadecimal (A)RGB notation in .xaml files.

It is largely based on the sample in the SDK, together with 

• a regex search for the "#" character + 6 or 8 hex
• A FileExtensionToContentTypeDefinition to limit this extension to files with the .xaml FileExtension
• a colored box with a black border (to highlight white and transparent colors)

Possible additions: 

• add support for known colors: http://msdn.microsoft.com/en-us/library/system.windows.media.colors.aspx

Code is available at: http://bitbucket.org/janverley/xamlcolorpreview/
(warning: don't use IE8)

Licenced under WTFPL: http://www.wtfpl.net/