Don't worry, it's a generic cab, not an original

I want to remove the rather bland sideart on my cab.
The cab sides are covered in black formica, and the artwork is painted/silkscreened on top of that.
here's a pic of exactly the same cab I have:

What kind of solvent should I use, without the black formica turning grey/dull?
Oh, and I live in Europe, so things like Goof-off are nigh-on impossible to get here.
