Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
When you create a Sway, one of the options in the ... menu is to Save as a Template. Once selected, it will create a new template based on that Sway which will appear in the list of templates on your My Sways page. Before creating the template, be sure to put any content/formatting in the Sway that you want in your template. The logo feature can be found be expanding the Title card and the various color features are located on the Design | Styles | Customize pane.
Hope this helps!
Jason