Microsoft Office 2007 Styled Theme

Based on a mockup by MondySpartan: https://www.deviantart.com/mondyspartan/art/Steam-Office-2007-Styled-Mockup-1060261068

Plugin

This theme (optionally) requires a plugin for the top bar and some other additional elements. The menu bar, links to a game's store page, community hub, etc. and some other things will not be accessible if not installed.

Titlebar is missing

It's going to be available in a separate plugin in the future. It's not released yet because it doesn't start early enough to modify window.open before the main window appears (but works for everything else). The screenshot only includes it so I don't have to take another one.

Accuracy

The theme features (almost) 1:1 context menus, tooltips & scrollbars. Other controls coming soon in a future version.