The factory pack for your paint might be a 'phantom, but I'd bet you mean 'fathom green' for your paint color? http://www.69pace.com/paint2.htm#1969p
You can drive your car to a local paint shop. Go to the one who sold the paint for the repaint if you know it. Otherwise, I'd suggest a PPG dealer (because that's my fav brand).
They can take a reading off a nice clean spot on your paint, and mix up a small batch of paint for you and either put it in a spray can, or provide it in a small can for use with a tiny brush. My supplier will mix as little as 2 oz, which typically fills a typical spray can (if that's what you want/desire), but for small chips, using a toothpick or a tiny tip brush will work best IMO.