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Are you using a folder changing application? If so check the help in the options for the app in the native settings app
 
You can use custom backgrounds with folderenhancer. If you are using Winterboard create a theme put your new image named FEFolderBG@2x.png in the following path...

var/stash/themes/themename/bundles/com.apple.springboard

Then activate the theme in Winterboard.

Good luck.
 
You can use custom backgrounds with folderenhancer. If you are using Winterboard create a theme put your new image named FEFolderBG@2x.png in the following path...

var/stash/themes/themename/bundles/com.apple.springboard

Then activate the theme in Winterboard.

Good luck.

Yes, fodler enhancer changes that. So follow what he said ;)
 
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