Matching old paint

I was wondering if anyone has experience matching original paint. I have 66 Dart paint code AA1, is it possible to do spot painting or is going to stick out like a sore thumb. I realize in its current state there is already a lot of "sore thumbs" It's really not in my budget to get the entire car painted. I have rust spots that need repair, Just looking to see if anyone has done this and how it turned out. I really don't mind the patina look but would like something that is more eye pleasing until I'm able to get the entire car painted.

Thank you,

Jayregan_66dart.jpg