WARNING:Make sure you have brick protection (bootmii as boot2 or priiloader) before using this! I am not to be held responsible if something goes wrong while using this app
UPDATE (Jun. 5, 2011): Added USB 2.0 Support, It checks the SD card first, if it cant find any themes, it checks the USB drive. The regular MyMenuify with USB support can also be found in the downloads below.
This is a mod of MyMenuify that I made when I thought it would be cool to have the Wii start up with a different theme each time (mainly for the wii theme team darkwii colour edits)
It adds 5-10 seconds to the boot time though, so I don't know if anyone will really want to use it.
I made two versions, one (shown in the video below) has output, which shows what theme it is installing and how far through the installation it is. The other has absolutely no output and just shows a blank screen while installing the theme. Both versions require no input from the user, and exit to the system menu when done.
To use it just set it as the installed file in priiloader, then set priiloader to boot to the installed file.
Themes must be placed in SD:/csm/[theme files]
Download: Mediafire - MenuRandomizer_v2.zip
The source is included in that download. Most of the code is Icefire's (Xuzz) I just edited a few things, so all credit goes to him. The usbstorage stuff is from Waninkoko's WAD manager.
Regular MyMenuify with USB Support: Download
Video: