How to create a new theme:
In the edit view, click on "Themes" on the top of your screen
Click "+ Create new theme"
Name your new theme
When creating a new theme you will be able to change:
Logotype (or keep it empty)
You can see a preview of how the changes you make in your custom theme will be reflected in your presentation and in your audience's phones:
Note: font type and background images will not be displayed in your audience's phones to limit the amount of data that needs to be downloaded onto the voting devices.
Editing a theme in one presentation means that it will also be updated in any other presentations where you use the same theme.
With the Team subscription, you can also share your theme to let everyone in your team use it for their presentations.