luizlizard has released XMB Theme Cycler version 0.5. This application allows you to change your PSP's XMB themes every time you reboot. This latest release also includes a theme manager function, which now allows you to manually flash your themes.

complete features list:

-Theme Manager (NEW!)
-Automatic theme flashing at startup
-Unlimited slots for saving themes
-Configuration menu
-Dummy font flashing.. Frees 2.5 mb in Flash0
-Monthly theme cycling
-Original theme backup
-Scripting improvement over last release