It seems to be quite difficult to source desktop backgrounds of just Oranges. However, here are a few orange Marimekko backgrounds available and one that appears to a close-up of an orange on FantomXP.
Google Images provides quality images of the sky for free. These breathtaking images can easily be used as a background for a computer desktop or any other application that requires a photo.
If you find any online image, you can right click on a Windows computer and select set as desktop background. That is the best way to get free images for your background.
You can use any picture of Ryan Dunn as a desktop background. Just find and save a picture of him. When viewing the picture after it is loaded completely on your computer, right-click it and select "Set As Desktop Background" ---- Go to http://images.google.com and write there the search term "Ryan Dunn", once the search finishes, you need to change the selector that says "All image sizes" to either "Large Images" or "Extra Large Images". After that, just get the picture you like as described above once you find it.
A quick search in Google or Yahoo images produces various Windows cloud desktop backgrounds. There are various options including animated backdrops available.
The best place to find HD desktop wallpaper images is on Google images. There one will find the biggest selection of HD images. One can also download these images from the iTunes store. on can also download it from www.hdwallpaper4pc.com
One can find gray background images by using the Photoshop computer application. By using the application one can create an customize their own gray background images.
google.com/images
In order for one to find natural pictures for a desktop background one could go outside and take some natural pictures then upload them to their computer and set the one they want for a background.
A person can find green background images online at Google Images, Photobucket, E-Web, DownloadFree, DesktopNexus, FotoSearch, Free Pic and Image Magic.
Whatever you choose it to be, if you find an image that you like, on the web, in your pictures folder etc. , you can right click it and press "Set as desktop Background".
Right click anywhere on your desktop, click Properties, then click on the settings tab. The number, also called resolution, shown here is your background size.
Well, the settings for desktop backgrounds on a Mac can be found in the Control Panel under System Appearances and Settings. However, there is also the option of just changing the desktop background by picking a picture in the pictures file, and setting it as the desktop background instead.