I have been given a deep red hydrangea. How can I keep the colour?

I'm looking forward to any answers you might get Jennyliz because just today I saw a beautiful one in a garden close to me. There were several pink ones nearby so this one really stood out.

There's a very good explanation about Hydrangea colours on:
http://www.hydrangeashydrangeas.com/colorchange.html

There are some that are not pH dependent and will stay the correct colour. I would plant it and see what happens and then if it does turn colour give it the appropriate feed. You can buy the correction mix at garden centres too :o)