Google+ Ultimate Allows Design Customization for Google Plus
Here is one good extension in the Chrome app store that helps customize the design of Google+ page.
The layout is somewhat similar to that of Facebook and if you want a complete break from it you should try the Google Ultimate extension for Chrome.
Alright so why should you go for this extension ?
It not just improves the design and layout but also adds some functionality to it like appending both the Google bar and the Google+ navigation bar to the top and freezing the left panel. The extension modifies the background, makes scroll bars thinner in the chat lists (for online friends) and reduces the size of images appearing in your stream.
There are options available to choose which feature of the extension to enable. The extension also has an experimental feature that allows you to view items in your stream side by side. The feature is meant to benefit people viewing Google+ on a wide screen.