I'm in the middle of painting my car right now. I've been working on it for about four months.
It takes a lot of skill to get a car painted right and painted fast. Not to mention car paint is incredibly toxic, so you need to spend $$$ on safety equipment, you need a big air compressor and an HVLP paint gun (about $800 for them), you need to buy the paint ($400 for quality stuff from PPG or DuPont), materials like sandpaper and cleaners ($200), and a DA sander, and a polisher.
By the time you get the tools and materials for your paint job together, you've spent a large portion of what a professional job would have cost and have many hours of tedious work ahead of you.
You'd be better off selling your car, and finding the same make and model in the color you want, if it's really important to you.