Magento - transfer theme to another site

I've built a site for a customer in Magento (version 1.4), and now need to copy the theme acr开发者_如何学运维oss to a new site for the same customer. Is transferring the theme as simple as copying the relevant folders from 'app' and 'skin' (and then activating in the new Magento installation)?

There are also several extensions I need to install - should I install them before moving the theme so they don't overwrite anything, or will the theme be unaffected by extensions?

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you should be fine to copy the app/design/frontend/default/<yourtheme> and skin/frontend/default/<yourtheme> folders across. The extensions should be orthogonal to the themes, assuming that any design changes effected by the extensions have already been incorporated into your theme that you are copying. So it shouldn't matter what order.

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As long as the theme you're uploading isn't base/default nor default/default then it is safe to just copy the files over. No extension should be overwriting in folders that you named.

As for which order to install in, that is personal preference. Personally I would like to know everything functional is working as expected before dressing it up with a theme. Perhaps you would rather tackle the easy task of theming before worrying about extensions you know less about...