Themes allow you to define a particular 'look and feel' which can be applied across Confluence or to an individual space. Use themes if you want to add a new functionality or to significantly alter the appearance of Confluence.
To create a new theme,
1. Create the decorator files that define how the different content screens are laid out.
2. Create the colour scheme for the theme.
Optionally, use a stylesheet which will override the styles defined in the decorator files.
3. Add
Create the theme plugin module
4. Install the theme plugin