Buy the paint chip repair kit or wetsand kit from Autogeek, and go to paintscratch.com for a touch up kit. You enter your car (& vin I think) and paint code and they have a list you can choose from. Get the brush kit (for like ~$20). It comes with paint, clear, rubbing compound and laquer thinner. It is great. They have instructions, follow them. Then just wet sand and buff when you are done. Should look like new.
I did two coats paint. Let cure for a few days. Two coats clear (or until it is a little above you current clear), cure for a few days. And then wetsand it all flush. If it is a small chip, use a tooth pick and not the brush they give, it is easier.