Paint job

What do you mean by "paint" ???

And are you only interested in CAD software?

I finished a modeling (aircraft), and I want to apply some material on it, I am using catia v5.

Use Keyshot Software
https://www.youtube.com/watch?v=1hnTRR7OkWw

is that rendering you ment??

With your CATIA model, you can use APPLY MATERIAL as Jasper said. To see the material, make sure you choose the Material option for the rendering style.