AgentWP Lab’s (Mayur Somani) has developed first google+ WordPress theme which loads pretty faster and looks so simple. Also Google Plus wordpress theme has excellent typography to make your readers reading experience better and comfort. In order to use this wordpress theme all you have to do is, upload the Google Plus WordPress theme package through (WordPress Dashboard -> Appearance -> Themes -> Upload) and Activate it like you do for any other wordpress theme.
Google Plus WordPress Plugin
To fix thumbnail issue in Google Plus theme here comes a wordpress plugin (get the image). Upload and activate like any other wp plugin and do a little modification to make the thumbnail image fit on homepage of the site.
Adjust the width and height of thumbnail image to 100 x 100 to make it look better on the site homepage that has the theme installed.