If you are happy with the look and feel of your site, that's great! If you'd like to explore some different options, you can do so by applying a different theme. Google Sites has several built-in themes that you can apply to your site. Each theme changes the layout of the title header, the font, and the color.

Select a Theme

Click on your Home page. You want to preview the themes from your Home page because homepages contain more styling elements than other pages.
In the right column, select the Themes tab (to the right of Insert and Pages).
You will see a series of themes appear in the right column. The theme that you have currently selected is the one that has the palette of colors below it. Remember which theme you are using in case you want to toggle back to it.
Select a different theme and watch your site change!
You may wish to adjust the alignment of the text in your Title header to Center or Left-aligned. Try different formats to see what looks best.
Select a different color from the palette below the theme you have selected. You'll see that it adjusts different aspects of your site, like the buttons you added on your homepage. Also, that color becomes an option for a background color for each section.
- If you wish to select a custom color, click on the color at the far right end of the palette bar. It will allow you to use the color picker to choose a custom color.
When you have selected a theme that you like, you are done with this step.

Select a Navigation Style

View this 1 1/2 minute video to learn how to choose between a top and side navigation menu.