Newbie Question for the First Mod

hi i am new and i would like to know how could i learn to change chat colors in gameserver by creating an ark mod. for example there will be a membergroup called “vip” and chat colors of members of “vip” will be green. also i need to learn how to create membergroup. if its not possible. i have an another idea like this. for example i will give permanent item to a player like specimen implant if player has that permanent item in inventory then player is able to write green color in chat. i hope i have explained what i would like to do.

i will be appreciated if you help me. i have downloaded ark dev kit yesterday and i think its so fun btw i was watching some tutorial videos to create an ui mod and i made one and tested on my server Steam Workshop::TestUI for Arya and worked. thanks to who supports ark.