nice color.....

If your plant is Iresine (herbstii), it can tolerate temperatures down to 36 degrees F. Likes full sun, classified as evergreen shrub that can get up tp 3 ft tall. Needs abundant watering while actively growing and is propagated by cuttings.

Now, there are other varieties;so,what i said above may not apply to what u have. Do u know what variety u have?
Here is another helpful web site that mentions some of the other spieces: http://www.botany.com/iresine.html