For stickers/decals, check ebay, believe it or not. I found a print shop that has stickers in different sizes, colors, and fonts. They were easy to appply and fairly rugged, but you really need to clean the bike or decal corners may start to peel. They are a BUGGER to get off, I wanted to reposition one and scraped the clear coat under the sticker

peeling it of. I think they were around 5 or 6 bucks for 2 big stickers for the downtube.