Then download customizemii and put in the .mym file. It will ask you for the .app file just select it and then where the .csm should be stored. On your wii open any theming tool, i recommend mymenuify gui but for this youu need ios patches, click on the .csm and on install. Your wii will freeze for a fer seconds and then it should say finish what now? Then click on exit. And exit out of the hbc and your theme schould be installed.
WARNING:
PLEASE HAVE GOOD BRICKPROTECTION. INSTALL BOOTMII AS IOS AND IF YOU CAN AS A BOOT2 AND PRIILOADER
Installing themes has a high brick rate