Is there any possibility that someone knows where to get the default wii theme, and make it editable on a PC?
And does anyone know how to install a theme once you have completed making it on the PC?
Thanks (in advance)
That's something you're not likely to get help with on this forum. Themes are an easy way to brick your console, and no one here wants to help you do that. If you have other questions I know I, and many others here, are happy to help. There's some great reading on most subjects related to homebrew in the Guides section, and here's a great list of things to watch out for so you can keep your console in healthy shape.
Welcome to the forum and enjoy your time here.
"I think that the Wii is a beautiful piece of hardware, and a broken Wii is a tragedy. It doesn’t matter why or how." -- Bushing