Admin Customisation?

Hi guys, I recently created a zombie master mod server using their megathreadfor on how to make a dedicated server. After I compleated their tutorial I installed sourcemod and metamod which work when I run the server. But today I feel like exploring so I’m on a quest to figure out how to stand out and intimidate the other players in my server. I’m looking to modify/add these few things in my server today:

Change the colour of my name (admin) in the chat bar
&
Change my playermodel

I have an idea where to modify it, in admins.cfg, which currently looks like:



Admins
{
    "NAME"
    {
        "auth"            "steam"
        "identity"        "STEAM_ID"
        "flags"            "abcdefghijklmnopqrstz"
    }
}


I was wondering if I could insert a few more commands in there, I have no clue what to put in though, could it be something like:



Admins
{
    "NAME"
    {
        "auth"            "steam"
        "identity"        "STEAM_ID"
        "flags"            "abcdefghijklmnopqrstz"
        "cvar"             "<path to model>"
        "textcolour"   "R: 255 G:0 B:0"
    }
}


It doesn’t look right though! I don’t have a clue, someone help before I break my server! haha.

Thanks in advance to anyone who replys!

EDIT:
Also, I was thinking of making a script so people can vote to give one living player some health once each round. Not sure how I’d go about it or in which DIR I’d have to put it in though! Any ideas?