Hi
I am an N-scaler and have now started a little personalized decal service for decals printed in white or black (Alps 5000 printer). Colors are almost impossible on an Alps except for warning stickers or similar.
Although it is mostly N-scale stuff, I also have a special request page for all scales.
Here is a sample of my latest decal set for the 40ft well car NScaleKits model
Please check it out at
http://decal.helveticarr.comand click on: Individual End Reporting Numbers or other special requests
I have never printed out Z-Scale decals but would like to give it a try.