Hello.
First, please don't double post
Edit your first post.
Secondly, you can't use tags in messages the plugin sends.
You have to use the character that is used when Ctrl + K is pressed on a conversation window.
I suppose you use Visual Basic. If you look in the module that comes with the plugin api, there is a const that if you use Chr$ on it, it will become the color code.
Thridly, I'm sorry to tell you, but the plugin you are making, has been made as a StuffPlug talker and as a plugin by me.