A theme enables you to style different elements of the dashboard, from colours to fonts to splash screens at logon.
You can configure as many different themes as you want. Different users can be configured to use different themes, for example different trading divisions of one organisation, or indeed switch between them.
Please note that if you have made changes to one of our shipped themes e.g. pi Berry, the changes will be overwritten when you upgrade to the latest version of the dashboard.