As a general proposition, I agree with those who say to use model paints. However, I have used interior latex paint on plastic buildings and models with an airbrush and achieved very good results. If you are using an airbrush, all you have to do is to thin the paint. You can use the thinning fluid for acrylic paint offered by anyone who sells acrylic model paints. You can even use water. I have done both. You just have to thin the paint a little more than you ordinarily would if you were using model paints that are specifically designed to be used on plastics and wood models.
I had no problem at all. Just don't thin the paint too much. It works very well with flat colors. I don't know how well it would work with glossy colors, but you would probably be using flat colors on buildings anyway. The advantage, of course, is that you would have a much wider variety of choices of colors that you could use.
I had no problem at all. Just don't thin the paint too much. It works very well with flat colors. I don't know how well it would work with glossy colors, but you would probably be using flat colors on buildings anyway. The advantage, of course, is that you would have a much wider variety of choices of colors that you could use.