Noticed that in Joomla 2.5.x template parameters are no longer stored at table #__components  ( or equivalent #__extensions).

Now exists a new table called #__template_styles

Parameters are stored in JSON format.

Example parameter:

{"wrapperSmall":"53","wrapperLarge":"72","logo":"images\/logo-js.png","sitetitle":"Joomla! Spanish","sitedescription":"Gestor de Contenido Open Source 2.5","navposition":"left","templatecolor":"personal","html5":"0"}

Default template values are still stored in #__extensions table.