How can I make some themes usable only by admins?

Its built in that way so you can have themes only on specific blogs:

  1. Disable the theme under Super Admin
    -> Themes.
  2. Enable the theme for one site under
    Super Admin -> Edit the site you
    want. Look on the top right, there’s
    a list of disabled themes.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)