Recently i have created a mobile website using Drupal. I would like to use another theme instead of the mobile theme in certain pages such as the user login page. This can be done by the ThemeKey module.
1. Instead and enable ThemeKey.
2. Go to admin/config/user-interface/themekey.
3. Create a new theme switching rule. ex. i want to show the Seven theme when the /user page is shown.
There is another module which could apply the theme base on Context but it is still a sandbox module – Context Reaction: Theme 7.x-1.x-dev.