Hi, folks! I'm planning to harvest the seeds of my purple pepper plant (try saying that 3 times fast!) and need to know how to do it to preserve viability, if they have any. The berries are dark purple, nearly black, and round, about the size of a small pea. The tag merely says "ornamental pepper," but does mention it is hardy down to 30 degrees F. I find its purple foliage very attractive, and will be willing to share, if it works. Advice, please?