Possible to apply a "background image" to posts?

[erotica_n_s]

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Would be nice to apply a background "texture" to posts, something like this.

Any advice how to do this?


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[Primalex]

For gods sake, please no.

People who change the font colors without having any clue which theme people use (or that there are actually themes) are annoying enough already.

 

[Hypoxia]

If it was possible, some asshole(s) er I mean well-meaning but misguided individual(s) would have done so already. There actually is a way to get that effect but if I told you how, I'd have to kill you. No, please keep it aesthetically clean. Thank you.