Trying to have same Hierarchy Icon for inheriting scripts

Hi, here's my situation:
I created a main class 'LocManager'. Added an icon (in editor folder), that works, great.
But when I do a class that inherits it, I need to do a new icon file, which make sense, I get it.

But isn't there a wizard way to directly pickup the same icon rather than having to re-create one each time for each script class ?
Thanks for your help

 

Trying to bump the thread a bit @_@