This is my skin of choice for browsing my AK2/RPG.Based on the Metalguy66 WindowsXP theme.I added a new top screen and polished up teh text colors and such.
I don't have a wii u anymore to test it myself, but if homebrews are not visible on the wii u menu I think you can press L + R + minus to open the plugin menu, there should be an option called "homebrews on wii u menu" or something similar