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  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x45
  RenderBlock {HTML} at (0,0) size 800x45
    RenderBody {BODY} at (8,14) size 784x17
      RenderBlock {P} at (0,0) size 784x17 [bgcolor=#00FF00]
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          text run at (0,0) width 456: "This paragraph should have a green background because its TITLE "
          text run at (456,0) width 105: "attribute is set."