Is there a translation of at least the New Testament into German which uses modern vocabulary and idioms, similarly to the way The Message does in English?
I don't know if that is what you are looking for, but there is a project called volxbibel, which is a translation done in form of a wiki under the creative commons license. Which is an interesting idea.
The language is very atypical to a bible and quite modern.
AFAIK the whole thing is controversial, because the language may not be accurate in some places or is regarded to be inappropriate for a bible.