layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584 [color=#FFFFFF] [bgcolor=#008000]
      RenderText {TEXT} at (0,0) size 312x18
        text run at (0,0) width 312: "This should be white text on a green background."
