How can I customize the appearance of web sites in Chrome? [duplicate]

Possible Duplicate:
Change default CSS of Google Chrome
How do I disable CSS or make my own CSS style for a specific website in Google Chrome?

Web sites like Wikipedia that extend to the full width of the available screen are very annoying when used with a big monitor.

How can I customize their appearance (for example, by injecting some CSS) in Chrome?


Chrome supports greasemonkey style user scripts by default. Read this for more info - http://www.chromium.org/developers/design-documents/user-scripts