The look of each course's Journey: its picture, colours and words. Make a theme, preview it at a few course lengths, publish it, then give it to a course. Nobody's progress changes when a course changes theme.
Your own Claude makes the themes: it reads the brief and your notes through the Helmley themes connector and saves drafts here, for you to preview and publish. It can't publish anything itself.
The link is a key: keep it to yourself. Making a new one turns the old one off; it also stops working if you stop being an owner.
The draft (or the published copy) on made-up courses of 5, 12, 20 and 26 steps. Each preview works: zoom in and out as a learner would.
Or upload a theme file (.json), made by your Claude or the theme maker: it's checked here, then saved as a draft of the theme it names (over that theme's draft, if it has one), ready to preview and publish.
London dates, both ends included. A theme's seasonal version shows between them; learners can turn seasonal touches off. Easter runs from Good Friday to Easter Monday each year.
Who sees this: only owners. Published themes are public (they're pictures); drafts, notes and images are owners' only.