JSON issue for new card visual

[SDittmannFleet]

I have the following JSON code for the NEW card visual. It is applying most of what I'm specifying, but it ignores "padding" and it ignores the color specification for the card value. What do I need to change to fix this? 

"cardVisual": {
            "*": {
                "labels": [
                    {
                        "color": {
                            "solid": {
                                "color": "#666666"
                            }
                        },
                        "position": "BelowValue"
                    }
                ],
                "categoryLabels": [
                    {
                        "color": {
                            "solid": {
                                "color": "#666666"
                            }
                        }
                    }
                ],
                "values": [
                    {
                        "color": {
                            "solid": {
                                "color": "#666666"
                            }
                        },
                        "horizontalAlignment": "Center"
                    }
                ],
                "padding": [
                    {
                        "top": 0,
                        "left": 0,
                        "right": 0,
                        "bottom": 0
                    }
                ],
                "cards": [
                    {
                        "fill": {
                            "show": false
                        }
                    }
                ]
            }
        }