plugin & Styles Question
 

If I have installed some plugin that edit the style and i add A new style after is there a way to edit the new style?

I don't really understand your question.

see how some plug ins edit your styles?
well what if i had a plugin installed and then added a new style , how would i know how to mod the new templates?

Please explain more (or give an example) of plugins edit your styles. It is still not clear what you mean.

Maybe he means with all the hack installed in one style what do you have to do for the new style. By my understanding. And to answer that you would do the edits that the hack instructs to the new style.

Template edits must be applied to all Styles where you want to have that functionalty (from the Hack or Template Modification).

Easiest method to deal with that is have a parent style for all your styles, and apply all "global" hack template modifications to it, then the children (the styles your users can select) have those edits applied automatically.