OSU Standard comes with several different color scheme/icon set options that can be used. These options can be found by going to Admin menu > Site building > Themes > Configure > OSU Standard.
Locate the OSU Theme options group.
In the Color Scheme drop-down, select Marine Sciences.
The Select Background Image drop-down will appear. Select an option from the drop down.
Click the Save configuration button at the bottom of the page.
Currently the available color scheme options are the OSU Standard default and the Marine Sciences scheme set. New color scheme packages are currently in development.