Changing the Confluence Default Theme
Determining at a high level the look and feel across your site.
Out of the box, Confluence uses a default Confluence look and feel for this setting. You can override this at the site level, by changing the Confluence Default Theme. (Or, at the space level, by changing any space's look and feel.)
Choosing the appropriate setting for the Confluence Default Theme is an important first step when using Theme Press in your Confluence instance. The word theme in this case is used by Atlassian to define a theming add-on, like Theme Press.
Navigate to the Themes area in Confluence Administration
To Apply Theme Press to all spaces in your site:
Select Brikit Theme Press as the Current Theme.
To apply Theme Press only to specific spaces in your site:
Select Default Theme as as the Current Theme. Then, follow the instructions in Applying a Theme to a Space.