I had the same issue after powder coating my frame. Got some replacements professionally made up. Looks like a printed sticker but the material is far more than that. Its layered (but not these gel type things) to create a longer lasting finish to cope with the outdoors - sun, (when we actually have it :-), inclement weather, etc...
All done by email, paypal, & royal mail....Can give you the chaps details if required. He already has the template, so all you'll have to do is provide the bikes details.