Design Center is a Web application that allows users to change the colour of different layers in a photo. In a photo of a bedroom, there could be layers for the walls, the ceiling, and for the floor. The application lets users change the colour of each and see how a new paint job would look. If used on a furniture store's Web site, different layers could be used for beds, chairs, lampshades, etc. to allow customisation by users.
palettejoin joins the palettes of multiple 8-bit PNG images, generating one single palette and adapting the images to the new palette. It can also accept a GPL palette as input, generate palettes in GPL format, make all files use the same transparent color, eliminate unused colors, join similar colors if there aren't enough available colors, and backup changed files.