Using a dynamic Static Resource in a managed package

Question

We have a package that we install in another org. In this package I look-up to a static resource (an image) and load it on my visualforce page. Something like this:

<img src="{!$Resource.Logo}" />

Doing it this way, we always have the same logo in the org we install our package (the logo that is included as a static resource in our package). How can I make it dynamic?

So maybe we in our package we look-up to a static resource that doesn't exist in the package but will be available in the org we install into, so we can modify that logo (static resource) on that org.

If not possible, is there another way that I can achieve this? So I load a static resource, but I can modify it in different orgs to be a different image...

Update:

Just to make it clear, both static resource and page are in a managed package and I want to show a different image in different orgs that I install my package.

Answer 1

There is a similar question here: Accessing Local Static Resources from a Managed Package

So if you are using that URL pattern listed there to access a static resource, you basically just have to instruct the user to save their logo to a local static resource with a specific defined name.

Another idea could be to have a user-editable Custom Setting in the managed package which contains the relative URL of whatever Static Resource (or File, or Attachment, or Document) they want to use for an image. You default it to your own logo, and then if they want to change it, you provide instructions for doing so.