Which krylon paints are good for painting models and what do I need to do to use krylon safely on the models ? do I have to use any special primer ? I have always used model hobby spray paints, (no airbrush) But on my strict budget, I have to find less expensive paints. I model real space & some iwrin allen sci-fi and need some aluminum colors. The testors metallic silvers just don't cut it. does anyone have a good list of the krylon paints & any related primers i can use safely ?