Replacing Nissan Altima '97 GXE Airbag kit?

Hi. I am your average "Girl" when it comes to car. Though I am a DIY'er with duties such as Oil Changes and tune ups, I find myself stumped on this issue. Recently, a family member drove my car in a recent snow blizzard but when met with a huge lump of snow, the car rebelled. The air bags came out and I was told that they were probably "activated". I had two, no actually three choices. Buy a new car, replace with new air bags or replace with used air bags. Through several consultations, Ive decided on used and am content in my decision thus far. I have found an air bag kit from a reputable dealer but am stumped again. Should I get the bags with a certain color, such as the color that was in my current deflated air bags or does it matter? Also, is the kit going to be enough? Is there a possibility that something else will need replacing as well. Any help is appreciated. It seems that I am finding more info than the local dealers and that is why I am on Yahoo answers today. I need a car inspection ASAP and know I will not p with this problem. Or can I? Thank you all.