Final Frame of transparent screens yesterday and noted his own iOS app offers an easy way to get the same results using your device's built-in camera... As the name implies, Chameleon Clock is a simple iOS time display which blends into your environment by using the camera on the back of your device to either sample the colour of whatever is behind it or even play a live video feed. Nothing fancy, but the effect can be pretty eye-pleasing depending upon your own setup and creativity (it may even make your clutter seem visually "interesting"). Plus the app eliminates the need to use a photo editing solution, since you're just snapping and choosing your image source right from your iPhone or iPad:
Toggle the time display between black & white to match your device with a simple tap and change its transparency with a swipe up or down - anything from jet black and pure white all the way down to barely visible for a more subtle effect. Tap the mode icon in the bottom left hand corner of the screen to switch between Chameleon Mode where the background colour of the screen is constantly updated to match whatever is behind it, and Live Camera Mode where the background becomes a live video feed.Chameleon Clock is available via the Apple iTunes Store for .99 cents.