I think the only way to get those folders is to reinstall DS. But you don't need them: Just install everything to the same parent folder - but if they are zipped into another folder (e.g. Vendor-Product/data/.... then it's the data and other folders of that level that need to go into the main directory folder. I use 'Content/data' and 'Content/people' etc - in fact I have several directories but that's to keep my own products organised while I'm making them.

You can change the interface colours but I can't remember how offhand - try going into 'customise' if you can find it, or 'theme'

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