You can create a new app under the same account to use for another website. To create a new app:
- Click on your existing app in the upper right corner of your dashboard (eg: "example.com").
- Select "Manage apps..."
- Click "new" to create a new app. Note that a new app name and color will automatically be created.
- Now click "edit" to the right of the new app to rename the app and assign a different color.
- Once you save changes, you can close the modal and choose your new app from the app drop-down list.