sampoyigi I'm not sure this will work but give it a try.. create a new database record in the extensions table, use the tastyigniter-blue row as example find default_themes in settings table and replace tastyigniter-blue.
harpreet How to add new admin theme? I create a copy of existing theme tastyigniter-blue to tastyigniter-red and changed in database settings, extensions also but it show the error. Please help me