If you're wanting to delete a template you created & saved, Numbers stores those you created & saved as templates in HD > Users > [your account] > Library > Application Support > iWork > Numbers > Templates > My Templates.
Do you happen to know if you can change the icons of your own templates?
At the moment I have twelve created and saved templates but they all have the same icon.
Every Numbers's document is a "package" which is in fact a variant of folder.
So, you may give them a custom icon thru the "Show Infos" window (cmd + I).
Just paste a picture onto the file's icon displaid in this window.
Yvan KOENIG (from FRANCE samedi 10 novembre 2007 12:01:27)
Thanks Yvan. I probably do something wrong because it doesn't seem to work.
I go to the Template file (as described by Peggy) and then Get info.
For starters the icon there is different from the icon in the templates and it is not possible to change the icon picture.