I don't know if this is the right place to ask (If not please, could someone move this to the right place Thank you

)
I'm trying to get this bind working (
/bind Enter beginchat <color #ff00ff><bordercolor #9f9fff3f><bgcolor #3f3f3f9f> )
It makes the background all transparent.. Thing is, when I go to press enter - the code does work, but the code appears in the chat every time.. Now I remember very clearly back in the day you could make it so the code never appeared in the chat window, while also making the bind work. But for the life of me I can't remember how and soo far my search has come up with nothing.
(This annoyed me even back then xD)
If anyone with chat bubble binds are able to help, that would be insanely awesome.
Also I've searched places like paragon chat/wiki etc and it only shows the basic of binds, nothing advanced.