ISIS is an unlucky name for a Joomla back-end template.
A Google image search returns executions, decapitations, and all kind of barbarisms, except the actual Joomla back-end screenshots.
(For those who don't know it, ISIS refers to the Islamic State of Iraq and the Levant)

Keeping in mind the due cultural differences, the word ISIS sounds to European people exactly like the word al-Qaida sounds to American people.

Would you ever create a Joomla template named al-Qaida? If the answer is no, you should seriously consider to rename the ISIS template.