I can't get the username color to change, only the color of the title. I am trying to allow the title to be hidden and the Name to just change colors, so instead of it saying for example [gold]Ninja it will just say Ninja in gold. 
Example of my config, I tried it 2 ways. When I can get the title to hide, but when I did that, it just hid all of my player challenge titles even though I never reset them.
{
"GroupName": "gold",
"Priority": 0,
"Title": {
"Text": "[gold]",
"Color": "#55aaff",
"Size": 15,
"Hidden": true,
"HiddenIfNotPrimary": false
},
"Username": {
"Color": "gold",
"Size": 15
},
"Message": {
"Color": "gold",
"Size": 15
},
"Format": {
"Chat": "{Title} {Username}: {Message}",
"Console": "{Title} {Username}: {Message}"
}
},
{
"GroupName": "ninja",
"Priority": 0,
"Title": {
"Text": "[ninja]",
"Color": "#FFFF00",
"Size": 15,
"Hidden": false,
"HiddenIfNotPrimary": false
},
"Username": {
"Color": "#FFFF00",
"Size": 15
},
"Message": {
"Color": "white",
"Size": 15
},
"Format": {
"Chat": "{Title} {Username}: {Message}",
"Console": "{Title} {Username}: {Message}"
}
}
]

try this "#d4af37" instead of "gold"

some colours just dont work, I stick to the basic , yellow,cyan,green,red,brown,orange and white, seems to work very well.

"gold" isn't a valid color with Unity, which is why it doesn't work. https://docs.unity3d.com/ScriptReference/Color.html

I gotta ask what is solved with that problem cause I dont see it.
I got the same problem. Tried #ffd700, didnt work. Tried #d4af37, didnt work.
So which colours exactly do work with the name and why do colours work with the title and not with the name?

This is from my betterchat groups folder, betterchat.jason

Moderator edit: Use code blocks when posting config files and other large text portions.

I use the colour "name" instead of the "#number" and it seems to work once you have set up your groups, I use the groups for player ranks plugin so its only a fraction of the total.

I just used gold as example, I have tried red, blue, yellow, name and numbers. I can get it to change the name color if I am using the first option in the config for "Player" and everyone on the servers name color will change to Yellow for example. If I create a new group and add members to it, for example change those that donate to server green and keep all others yellow, it will keep everyone yellow and just shows the title in green, the username will stay the primary color, I have even changed them around so the title shows before player.