Read here and learn....
Warbird Information Exchange • View topic - Rumor has it, another FW-190 has flown!
"This is a remarkably original aircraft. Excluding the engine which is rebuilt from half a dozen examples, new prop and all the electrics the vast majority of the structure is original. The wing had a new spar, couple of repaired ribs and a new leading edge but nearly everything else is original right down to the skins. Similar story to the fuselage. "
The original paint was anyway almost all gone when they found it.