Background
You can change background color simpy selecting appropriate one in a list.
More Info 
Developer: Steve S
License: GNU General Public License (GPL)
Operating System: Not Available
This JavaScript creates a smooth background gradient color animation between a set of selectable colors.
Developer: Peter Gehrig
License: Freeware
Operating System: Windows
Background Tile Viewer is multi-platform compatible.
Developer: http://www.dienhart.com/...
License: Freeware
Operating System: Unix/Linux/Windows
This script allows to show unlimited number of images in background of your page with determined interval.
Developer: Steve S
License: GNU General Public License (GPL)
Operating System: Not Available
Background resizer class can be used to display high resolution images as background for websites.
Developer: Arturs Sosins
License: BSD License
Operating System: Not Available
A script that displays a random background image each time the document is loaded, out of three.
Developer: http://wsabstract.com/sc...
License: Freeware
Operating System: All
Rollover background-color button is multi-platform compatible.
Developer: http://www.dynamicdrive....
License: Freeware
Operating System: All
Background Image-Change on MouseOver is multi-platform compatible.
Developer: http://www.codebelly.com...
License: Freeware
Operating System: All
4-flasher Background Color Effect is a multi-platform compatible script that rapidly cycles the page background through four different colors and then to the page fixed color.
Developer: codebelly.com
License: Freeware
Operating System: Unix/Linux/Windows
1-5 Methods To Dynamic Background Color is a multi-platform compatible code to dynamically change the color of your background.
Developer: WWW.CGIscript.NET, LLC.
License: Freeware
Operating System: Unix/Linux/Windows
Adding A Background Image To A Textarea is a multi-platform compatible script that offers a quick, easy way to add an image to the background of a textarea.
Developer: www.codefoot.com
License: Freeware
Operating System: Unix/Linux/Windows
Background-image Scroller is a multi-platform compatible script that creates a stunning page effect by scrolling the background image underneath your page content.
Developer: CodeFoot
License: Freeware
Operating System: Unix/Linux/Windows
Rollover background-image button is multi-platform compatible.
Developer: http://www.dynamicdrive....
License: Freeware
Operating System: All
Users can easily change the background color of a web page with this script.
Developer: Eric Sprague
License: Freeware
Operating System: Linux, Unix, Windows
Background Midi script is multi-platform compatible.
Developer: http://wsabstract.com/sc...
License: Freeware
Operating System: All
Formatting Background, Font, Sticky Selections in Dropdowns is a multi-platform compatible script that specifies font and background features in dropdowns.
Developer: tachi
License: Freeware
Operating System: All
A Cross-browser, Fixed, Scalable, Dynamic Background Image Solution.
Developer: Oliver Robinson
License: GNU General Public License (GPL)
Operating System: All
Let users select their own background color for your site.
Developer: jeffrey
License: Free To Use But Restricted
Operating System: all
Ds Bgslideshow is a multi-platform compatible script that displays a background slideshow.
Developer: dseffects
License: Freeware
Operating System: Unix/Linux/Windows
Vertically scrolling ticker with background image support for striking, versatile layouts.
Developer: CodeBrain.com
License: Freeware
Operating System: Linux, Unix, Windows