I have been looking for a way to let my users choose a different theme and be applied to their own accounts (PROFILES). This action should not override all the others users´ accounts settings. In other words, one specific theme for every user´s account (profile).

This Module does exactly that.

Themekey is a powerful module and it does have the option to let users choose their own themes for the NODES they have created (NODE-AUTHOR). However based on the interface, I guess it is difficult to applied the feature to profiles.

Congratulations beginner, you have provide an excellent module. Very simple. Don´t let this module down.

My advice: change your module name. Maybe some users out there are misled by the title and don´t know this module may be what they are looking for.