On Ultimate membership, you can build your own theme by picking your colors, backgrounds and all settings.
- Go to Settings > Design Settings
- Click on the (+) icon
- Chose a base theme to start that is the most similar to the design that you would like to create/modify
- Click Start
- A new theme will be created with "Custom" name on the front, you can rename it to any name you'd like
- Select the theme and change the images, settings and colors to the ones you prefer