Main Icon can be used on any aplication.
The resources are pre-named for Transmission.app for easy install; however, the icons can be used for other things also.
Main app Icon,
Torrent file Icon,
Resources for Transmission.app:
To install resources right click (Option+Click) on transmision.app and click on "Show Package Contents", Then double click on "resources" and drag the contents of my file into it and click "replace".
It is strongly recomended that you make a backup; however, if you didn't and want to change back redownload the software and replace the "resouces" file with the newly downloaded ones.