It only takes a few steps to change your image's background color in Photoshop. You'll just need to use the Quick Selection Tool and Quick Mask mode.

You can change the background of your PowerPoint slides using the "Format Background" feature located in the "Design" tab.

Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this effect, ...