@Tuna,
If the cloud is dark, then we know the cloud is not bright. Is the fact that it isn't bright also physical information? In other words: does physical information have logical operators in it (like not)?
Well, it seems you're trying to make it into symbolic information, completely ignoring the distinction that is being made. But, yeah, "isn't bright" is also information. It just is what it is, however you want to characterize it.
If I say "It is dark," then I have turned physical information into symbolic information.