farminred,
If you want to change to look of a stock ARF there are a couple of things that you can do. I assume that we're not talking about striping off the covering and recover it differently. You can use monokote/ultracote to chanage the exisiting covering job. You can add some stripes here and there, or other shapes and covering can change the look of the plane. Something as simple as a checkerboard on the bottom of the wing will go a long way to change the looks of the plane.

The other thing you can do is to have a vinyl cutter (PM me on for more info here) cut you some graphics/logos that you can apply to the plane to "dress" it up.

If you want the most impact, doing #1 will stand out more.

Tale a look at the 2 pictures here and you can see the difference a couple of pieces of monokote can make

Hope this helps

Ken