There wasn't any problems I was only explaining why I asked so I posted the real code :-)
Just to clarify better I post an image:
http://s20.postimage.org/icdo1j1od/autopsy.png
As you can see the print works fine coloring the addon name and the name of the mage pg (Frostanzo).
The SendChatMessage(autopsy_msg, autopsy_chn) instead prints in the default chat color without any color modification for name and pg class.
What I would to obtain was that the SendChatMessage(autopsy_msg, autopsy_chn) can write the same string of the print(), but you said it is not possible so I have to forget to have a colored chat :-)
Thanks very much for your answers.
I really appreciated.