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  RenderView at (0,0) size 800x600
layer at (0,0) size 800x48
  RenderBlock {HTML} at (0,0) size 800x48
    RenderBody {BODY} at (8,14) size 784x20
      RenderBlock {P} at (0,0) size 784x20 [color=#FFFFFF] [bgcolor=#008000]
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          text run at (0,0) width 231: "This should have a green background."