With the introduction of BlackBerry 10, theme addicts such as myself funneled our passion into other outlets for customizing our device. I use Z Theme combined with Wallpaper Changer HD to switch wallpapers and modify select elements of the display to make it pop.
Popular theme developer MMMOOO has thrown their hat into the mix by letting us know about their own cross-platform wallpaper gallery application called Wallpaper Sky. It gives users the ability to download a variety of images to make sure their display is never boring.
There are thousands of backgrounds at your disposal populated from Flickr and user generated content by sharing your own images with the community. Styles and categories range from landscapes and animals to abstract and technology. All of the images are high quality and free to download, preview, or set immediately as your background.
Images are arranged by category or popularity at either the bottom dock or by sliding to the hub on the left for easy access. Users can explore Flickr, search tags, shuffle images to discover new ones at random, and search by collection that also includes specific topics and a brief explanation about them. All of the images I downloaded were the correct resolution for my device without having to resize or adjust to fit the screen.
Of course there are some drawbacks. One is that you may need to go into settings to clear the cache to regain memory as it stores the thumbnails for quicker viewing but as such has long load times initially. The other is that the application is populated by ads at the top of each image.
Wallpaper Sky is a FREE and native application in BlackBerry World. All wallpapers are downloaded to your device and can be moved to your SD Card if necessary to free up space. It is available for legacy devices running OS 5 and higher and the BlackBerry Z10.