well to change the background color...select the camera you're rendering in...once your camera is selected...on the tabs menu...there should be a tab called "enviornment" in there u will see its black...thats the color you change to change your bg color in renders and as far as your second question...im not quite sure if I understand what you're asking
Toyota Supra WIP
I create feeling in others that they themseleves don’t understand.