Redline tires?

I'm wanting to get some redline tires. Do the companys that sell them new just paint a red line on them and resale them? Pretty sure they aren't maufacturing them. Can I just paint a red line myself? If I can does anybody know what kind of paint to use?

Seems like I read a magazine article about doing it yourself but can't remember when and where.

Coker Tire in Tennessee

That's where I got mine.....Coker doesn't paint the stripe on