Easily Theme Your Android OS with “KatKit”
GIMP is a popular image editor for various operating systems. It’s free, easy to use, and can perform many complex operations on various file types including PNGs, which are widely used in Android. It’s the primary image editor on Linux, and it has no real alternative (except perhaps Pinta). This makes GIMP’s user base quite large and devoted.
GIMP can be used to create an Android theme. But thanks to XDA Senior Member Kdio, theming is now quite a bit easier for GIMP users. Kool Android Transmutation Kit is a set of tools that create a ready-to-flash ZIP file with newly themed files and XMLs. These tools work both on Linux and Windows, and can theme every variant of Android to date, including HTC Sense and Samsung TouchWiz.
KatKit then builds, signs, and zipaligns files to make them ready to use. KatKit requires Java and GIMP to work. Linux users also need to have root privileges to set correct permissions onto the files.
If you are a theming enthusiast or wish to become one, make your way to the tool thread and give Kool Android Transmutation Kit a shot.