They are mostly (although not all) still available from Honda, you need to order the individual decals by part number as far as I'm aware you cant buy them as a set.

Find the part numbers you want in the online parts manual and email your Honda dealer with a list of what you want, make sure you are sitting down when you get the prices though they aint cheap

I use David Silvers or Lyngs in the Uk, both very helpfull.