getting this message when trying to grant it to owner rank?

That would generally imply that the plugin is not loaded.

any idea what would be wrong with this code? i ran it through jsonlint and it seems to not be valid and not want the ending bracket, im very new to this shit

[{
    "GroupName": "Owner",
    "Priority": 3,
    "Title": {
      "Text": "[Owner]",
      "Color": "#ff0000ff",
      "Size": 15,
      "Hidden": false,
      "HiddenIfNotPrimary": false
    },
    "Username": {
      "Color": "#55aaff",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    },
    "GroupName": "Default",
    "Priority": 0,
    "Title": {
      "Text": "[Player]",
      "Color": "#ff0000ff",
      "Size": 15,
      "Hidden": true,
      "HiddenIfNotPrimary": true
    },
    "Username": {
      "Color": "#55aaff",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    }
  ]

Did you verify the plugin is loaded and check your oxide/logs for errors?

Failed to initialize plugin 'BetterChat v5.2.5' (JsonReaderException: JsonToken EndArray is not valid for closing JsonType Object. Path '[0]', line 44, position 3.)

this is the error im getting on startup. 

the code im using atm is

[{
		"GroupName": "default",
		"Priority": 0,
		"Title": {
			"Text": "[Player]",
			"Color": "#55aaff",
			"Size": 15,
			"Hidden": true,
			"HiddenIfNotPrimary": true
		},
		"Username": {
			"Color": "#55aaff",
			"Size": 15
		},
		"Message": {
			"Color": "white",
			"Size": 15
		},
		"Format": {
			"Chat": "{Title} {Username}: {Message}",
			"Console": "{Title} {Username}: {Message}"
		},
		"GroupName": "Owner",
		"Priority": 3,
		"Title": {
			"Text": "[Owner]",
			"Color": "#00ff00ff",
			"Size": 15,
			"Hidden": false,
			"HiddenIfNotPrimary": true
		},
		"Username": {
			"Color": "#55aaff",
			"Size": 15
		},
		"Message": {
			"Color": "white",
			"Size": 15
		},
		"Format": {
			"Chat": "{Title} {Username}: {Message}",
			"Console": "{Title} {Username}: {Message}"
		}
	]​

Yeah, that isn't a valid configuration as it was edited wrongly. Make sure when editing to not change the layout, only the values.

[{
    "GroupName": "default",
    "Priority": 0,
    "Title": {
      "Text": "[Player]",
      "Color": "#55aaff",
      "Size": 15,
      "Hidden": true,
      "HiddenIfNotPrimary": true
    },
    "Username": {
      "Color": "#55aaff",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    },
    "GroupName": "Owner",
    "Priority": 3,
    "Title": {
      "Text": "[Owner]",
      "Color": "#ff0000ff",
      "Size": 15,
      "Hidden": false,
      "HiddenIfNotPrimary": true
    },
    "Username": {
      "Color": "#55aaff",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    }
  ]​

Changed almost nothing in config, just color code for owner rank, and now the plugin isnt even loading

You've added an entire group that isn't there by default, but the created JSON is not valid.

[{
    "GroupName": "default",
    "Priority": 0,
    "Title": {
      "Text": "[Player]",
      "Color": "#55aaff",
      "Size": 15,
      "Hidden": true,
      "HiddenIfNotPrimary": true
    },
    "Username": {
      "Color": "#55aaff",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    }
  },
  {
    "GroupName": "Owner",
    "Priority": 3,
    "Title": {
      "Text": "[Owner]",
      "Color": "#ff0000ff",
      "Size": 15,
      "Hidden": false,
      "HiddenIfNotPrimary": true
    },
    "Username": {
      "Color": "#55aaff",
      "Size": 15
    },
    "Message": {
      "Color": "white",
      "Size": 15
    },
    "Format": {
      "Chat": "{Title} {Username}: {Message}",
      "Console": "{Title} {Username}: {Message}"
    }
  }
]​

that did that by default when I used /chat group add Owner , and when i change the color code and capitalize the O in the text, it stops loading