cbParallax

This plugin provides the option to select a default custom background.

Add different background color or responsive background image for every single post or page or custom post type.

For themes with background images, creates a parallax effect when scrolling. Super simple; no configuration. Just works.

Background Per Page allows you to set a custom background per page (or post) as well as set up a default background for all other pages/posts.

Allow users to change the website style while reading at night, enabling them to easily read and spend more time on your site.

Configure WordPress updates settings through UI (User Interface).

Requires at least: 3.9 Tested up to: 4.7.2 Stable tag: 0.3.6 Version: 0.3.6 License: GPLv2 or later License URI: https://www.gnu.org/licenses/gpl-2.0.