Triggers Workflow

Hi,

I am new to Rules.

I would like to change Theme after the user login. In my web site, the user cannot change the theme.

In my mind, I have two choices:

1) Modify the Theme after the user login
2) set user default theme on registration.

Could this be done by Rules? We all know that we have the trigger "after a user login". Therefore, my main question is how to create the Action? Is it a must to write some PHP code?

Thanks.

hosais

Just posted this comment at drupal.org... http://drupal.org/node/271354#comment-1467898. The issue is with the UI for Workflow Triggers. It seems pretty clunky or at least it does in my case where I have 10 content types all destined to inherit the same triggers for 3 workflow states that I have established. Assigning the actions one-at-a-time across 90 some individual triggers has left me looking for a better way.

Just curious if anyone here has experienced this or has any idea where one would look to override the form in question?