first of all, u have to find the paint code. on saabs it's located on the inside of the door on the driver's side (in the u.s.) my 900se is black and the color code is 170. unfortunatly, most car part stores only have generic paints, and the saab dealers only supply touch up paint in a pen. there are a variety of internet retailers who will supply aerosol paint in 12oz cans. http://www.automotivetouchup.com/spray_paint.asp is a good site.
Here's pics of how the Napa Paint looks. The paint on the grill actually looks factory. I also painted the rear panel. I ran out of clear coat, but once I put a few more coats of clear on, it'll match like the front.