Here is a link to the video Mike referenced above.
I replaced the front and rear graphics/decals on my 2007. But the trailer was only about 5 years old and Keystone provided replacement original decals for free (after some amount of pressure from me). But I don’t know if you can get exact replacements now. I know there are on-line sources for similar, in not exact, decals. But I don’t have links to any of them.
I will say replacement is doable, but a lot of work getting the old decals off, all the old adhesive removed, and the new decals installed. And again I only did the front and rear as the sides still looked very good even after over 10 years. But the new decals did make the trailer look great again, just like when new.