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Changing theme settings, in general, is pretty easy.

There are a few extra things that need to be considered when changing to the OSU Pine theme variant from the default OSU Doug Fir variant, however.

Let's take a look...

Click on an image to make it bigger.
D7 - Appearance - Change to Pine Variant - Navigate to Theme Settings

1. Navigate to Theme Settings

Go to Admin Menu > Appearance.

D7 - Appearance - Change to Pine Variant - Click Settings For Doug Fir Link

2. Appearance Settings Landing Page

Once on the Appearance Settings landing page, click the Doug Fir link to view the settings that are specifically associated with this theme variant.

D7 - Appearance - Change to Pine Variant - Appearance Settings Panel

3. Appearance Settings Panel

The Appearance Settings panel will appear.

D7 - Appearance - Change to Pine Variant - Settings Completed

4. Change Settings

Once you're on the theme settings:

Theme Variant drop-down = select Pine

Enable full screen (Pine) checkbox = check this

2016 New Homepage Tophat checkbox = check this

Click the Save Configuration button.

D7 - Appearance - Change to Pine Variant - Click Home Button

5. Click Home Button

After the confirmation appears, click the Home button in the upper left corner.

D7 - Appearance - Change to Pine Variant - Completed Theme Settings

6. OSU Pine Applied

The OSU Pine theme now appears.

Note that OSU Pine still maintains the same Primary Sidebar that the OSU Doug Fir default had. If you desire a full-width layout, you may possibly have to change some contexts or block settings to remove any blocks from the sidebar.