Arduino and SMS

I saw on google and youtube a lot of sms examples, but more and less everyone is just using basic principles.
As i mention before i try to create a colour lamp with outside communication.

So if i set my lamp on purple colour, and my wife replace colour is it possible to make arduino to send me sms if changes is happen? but if i m out side of the house. I saw some similar idea on youtube with network shield and twitter msg, but i need to control that outside

Any tip ? or example of similar action

If you have a way to tell that the colour has been changed then yes, it is possible to send a SMS. But why?