Welcome!
I know of a few ways to get decals.
1. Search on Ebay. I have used this and had success for the model years I was looking for on the big Sunline decal. I did this about 10 years ago, and there are more choices today. Decal shops have reproduced them and are selling them. This link was a hit I did today on "Sunline decals," and it shows several different styles as decals changed over the years
Sunline Decals for sale | eBay
2. Find a custom decal place in your area, as they will make them for you. Across the top of the forum is a tab labeled "Resources." When you are logged in, it will take you to a lot of great stuff about the campers. Look under "Brochures" and scroll to 1994, download a copy. There are pics of the sides of the camper in there. NOTE: Most model years, they tweaked the decal design a little. The front rock guard decal or the side strips might slightly change. You can go a year before and after the brochure to see better pics, and note the minor tweaks. That may help the sign shop understand the many colors and styles needed. You may have to take the camper to them or take pics and show them for a quote.
3. While you can more easily buy the big Sunline decal for the front and rear of the camper, the side wall decals are more complex/expensive. For those, some have cleaned up, taped off, and painted the side strips. If you are getting a color match, you can take a sample to an auto parts store or a custom paint shop, and they can scan the color and possibly make it in quarts for you.
I hope this helps. Let us know how you make it out. We, too, learn from what worked or didn't from you.
John