Note that there was a recent court case in Germany where the courts ruled that the CSS files and related graphics at stake were not protected by copyright law. One would have to look at the various CSS files and images to determine whether they worth protecting. Art. 2 of the Swiss copyright law [FR] says: "toute création de l’esprit, littéraire ou artistique, qui a un caractère individuel" and goes on to list some categories. It is not immediately obvious to me where CSS files would fit.
Ugh. I'm sure nobody in this house would call the police if they found my appartment door open. Half of them seem to be alcoholics. But if I see a broken-in appartment, I will call the police. Thanks for this little snippet of information. :)