.ITT File Extension
File TypeIconTweaker Theme File
What is an ITT file?
File created by IconTweaker, a free utility that allows users to change Windows icons; contains settings for a theme, including a mapping of theme icons to their Windows equivalents; stored in an XML format.
IconTweaker themes can specify replacements for all Windows icons, including the My Computer, Recycle Bin, and My Documents icons and the icons for folders, files, and the start menu.