The current project logo has a MIME-Type of image/gif and looks like this:
The current background image has a MIME-Type of image/gif and looks like this:
(Properties: "background-image" and "background-mimetype")
The current icon image has a MIME-Type of image/gif and looks like this:
(Properties: "icon-image" and "icon-mimetype")
Note: Your browser has probably cached these images, so you may need to press the Reload button before changes will take effect.