64-65 Barracuda Pictures

That color is called Barracuda Gold. This is what I found...

Ditzler PPG 22461
Dupont 4658L, 4658, 181-93799

I'm not a car paint guy so I don't know if this helps much or not. I got it here.

http://paintref.com/cgi-bin/colorcodedisplay.cgi?model=Plymouth&year=1964&rows=50