This has been discussed before, but the inkjet waterslide decals will fade over a period of time depending on the amount of uv exposure. This is because of the pigments used in most inkjet inks. Applying clear coat over them after application will extend the life somewhat. Some companies are producing a more permanent ink, but you pretty much have to have one of their printers also. I'm not sure of the longevity of laser printing. The nice thing though is that if you do a pretty good job and save it, you can always replace the faded decals with new ones, if you don't clearcoat. I like the inkjet decals because it allows me to create a pretty good replica on the computer and immediately make the decal to check for sizing, etc. Decals made on clear decal paper should be used for white or light color finishes since the ink is transparent and will disappear on dark colors. If you want colors on a dark frame, I prefer the inkjet vinyl over the regular paper. This is good for lettering and more durable than the paper based product. I've gotten pretty creative with this stuff, although I'd never use it on a valuable bike or one that I wanted to restore accurately. However, my 70's Garlatti decals are pretty close to the originals.
For gold or colored pinstripping, a company called Squadron Mail Order sells modelers decals in pinstriping and also checkerboards in sheets and these are permanent. In fact, I've used the black checkerboards to restore an old Bottecchia.
Fred Durrette
Summerville, SC
USA