JSON Theme: Multicard and Card Visuals

Hello,

I'm trying to change colours in Multirow and Card visuals. In the latter I can change the font style and size, with the first I can't change anything.

Here is my code

SyntaxEditor Code Snippet

		"multiRowCard": {
			"*": {
				"dataLabels":[{
					"fontSize":27,
					"fontFamily": "Arial"
				}]
			}
		},
		"card":{
            "*":{
                "labels":[{
                    "fontSize":27,
					"fontFamily": "Trebuchet MS",
					"color": "#f0f475"
					
                }],
                "categoryLabels":[{
                    "fontSize":12
                }]
            }
        },