Scrolly - A beautiful custom scrollbar for every page

Scrolly is a chrome extension: web store (source) (live preview -->)

It turns this into this using css.

This is necessary because chrome does not use the scrollbars from your Linux theme:

Because widget rendering is done in a separate, sandboxed process that doesn't have access to the X server or the filesystem, there's no current way to do GTK+ widget rendering. We instead pass WebKit a few colors and let it draw a default scrollbar. (source)

Here is the source:

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}
::-webkit-scrollbar-track-piece {
    background: #aaa;
}
::-webkit-scrollbar-thumb {
    background: #7a7a7a;
    border-radius: 2px;
}
::-webkit-scrollbar-corner       {
    background: #999;
}
::-webkit-scrollbar-thumb:window-inactive {
    background: #888;
}

Feel free to fork it and change the css to be whatever you want. (pull requests welcome).

For more info on css scrollbars: http://css-tricks.com/custom-scrollbars-in-webkit/