You want to go into your config file and change each title manually. You need to add <color=#e8b923>TitleName</color> around the title and between the quotation marks. You can change #e8b923 to change the colour (My colour is gold). Will post some of my config below as an example. I would recommend that you save the changes you make to the title section of the config in a text document or something as I lost the changes I made to mine and had to redo them all upon server reboot. Have fun!
},
"Deaths": {
"CollectStats": true,
"EnabledInPersonal": true,
"EnabledInTop1": true,
"EnabledInTop30": true,
"IncludeInChatBroadcast": true,
"Title": "<color=#e8b923>DeathAddict</color>",
"BroadcastTitleChanges": true