Attached Link: http://www.renderosity.com/viewed.ez?galleryid=257671&Start=1&Artist=pearce&ByArtist=Yes&For

This might also illustrate the point ElectricAardvark was making. The postbox modelled in the link was red -- just red. Leaving aside the detail on the front of the box, it would be tempting to simply colour the model plain red; but a texture was prepared and used to give a blotchy, slightly weathered look to the overall surface. The background is a photo, but shadowing was added post-pro to the wall behind, and was matched with shading on the model derived from render lighting. Mick.