This plugin hooks into WordPress custom-background theme feature and overwrites the values on single post views if the post has been given custom background..
Your theme must support WordPress of Custom Backgrounds theme feature..
Unfortunately, there's just no reliable way for the plugin to overwrite the background if the theme doesn't support this feature.
Just to make sure, check with your author and make sure that they support WordPress custom-background theme feature.
Your theme must support Custom Backgrounds feature for this plugin to work..
In order to manage capabilities and roles, you need plugin like Members.
The capability required for being able to add per-post backgrounds is one of the following 'cb static edit The user can edit backgrounds on posts they have written. 'edit theme options The user can edit all WordPress theme options ...
Using Members plugin, you can assign one of the above capabilities to allow other, non-administrator users to edit backgrounds for their posts..
Also, user must have the upload files capability to upload new images, but this is WordPress thing and not specific to the plugin...
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
Read more