Some of these backgrounds are clearly less useful as support for text. However, the a particular background may be OK for the body margin created when using a main content div with margins to show the background around the div with its simple background color or muted pattern.
bg-open7.png
It is standard practice to use something called "Lorem Ipsum" to place text into documents during the layout/design phase. By being randomly generated text AND in Latin, to boot, the idea is that the design team can concentrate on how the layout looks and NOT be distracted by the meaning of the text. The sample used here came from: http://generator.lorem-ipsum.info/
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
bg-open5.png
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
bg-open4.png
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
bg-open3.png
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
bg-open2.png
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
Well, it is pretty clear that a really busy background is lousy for text support. I bet you reached that conclusion all by yourself, too.
bg-open1.png
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
bg-dot.png
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
bg-dot2.png
Lorem ipsum dolor sit amet, ea natum alienum ponderum mei, hendrerit concludaturque sea id, veri feugait scribentur at vel. Mei erat iracundia eu. Similique democritum definitionem mea ne. Ex est consul fastidii mentitum, usu eu unum nonumes invidunt.
