DockColorize is a new tweak released a few hours ago in Cydia, and through it you can add a little color to the iOS dock, but also to the task switcher. The tweak has a settings menu in the iOS Settings application, and there you have available colored versions of the native graphics made by Apple for the dock and task switcher, so you cannot color these iOS components yourself. Even so, the developer of the tweak says that we can add our own versions of the graphics in the DockColorize folder, so basically you can change everything however you want.
Ever wanted to change the image of your dock or multitasking tray background?! well now it's possible!!! The package comes with the original textures in different colors but you have the option to add your own with ssh or iFile!
DockColorize is available in Cydia's BigBoss repo, but it only works on iOS 5.
