Iphone 5s exchange warranty?

I got the new iphone 5s and it has some problems… So do you any of you know how long the warranty is and could you get your color changed at the moment i have black but when i exchange it could i change the color?

Why have you asked this in the Cars & Transportation section?

I believe warrenty is defaulted to 90 days or something of the like. I don't believe they let you change colors.