Custom JSON theme

[AL_1234]

Hello,

I'm developing a custom theme for my pbi reports. Unfortunatelly, I can't find clear information what I should write on which level in the file. Below is example of my JSOn file. Could you please explain when I'm supposed to do changes inside the first * and when inside the second *?

 "card": {

            "*": {

                "*":[

                {    

                }],

                "labels":[{

                    "color":{

                        "solid":{

                            "color": "#4C4D4F"

                        }

                    },

                    "fontSize": 28,

                    "bold":true

                }],

                "categoryLabels": [

                    {

                        "fontSize": 13,

                        "bold": true,

                        "fontColor": {

                            "solid": {

                                "color": "#888888"

                            }

                        }

                    }

                ],

                "label": [

                    {

                        "$id": "default",

                        "fontSize": 12,

                        "fontColor": {

                            "solid": {

                                "color": "#888888"

                            }

                        },

                        "position": "belowValue"

                    }

                ]

            }

        },

"barChart": {

            "*": {

                "*":[

                    {

                    "showAxisTitle": false,

                    "fillTransparency": 30

                    }

                ],

                "labels": [{

                    "show": true,

                    "color": { "solid": { "color": "#FFFFFF"}},

                    "labelDisplayUnits": 0,

                    "fontSize": 11,

                    "enableBackground": true,

                    "backgroundColor": { "solid": { "color": "#888888"}},

                    "backgroundTransparency": 50,

                    "labelPosition": "InsideCenter"

                }],

                "background": [

                    {

                        "show": true,

                        "color": {

                            "solid": {

                                "color": "#FFFFFF"

                            }

                        }

                    }

                ],

                "legend": [

                    {

                        "show": true,

                        "position": "BottomRight",

                        "showTitle": false

                    }

                ]

            }

        }

Thank you for advance for any help regarding this!

[tharunkumarRTK]

@AL_1234 

Every time Microsoft releases a new power bi desktop version, a new version theme json will get made available to everyone. The new json version will contain the properties/features/formatting options that are newly added.
https://github.com/microsoft/powerbi-desktop-samples/tree/main/Report%20Theme%20JSON%20Schema

Download the appropriate schema file to your workstation, then create a blank JSON file alongside the downloaded file. 

1. '*' - represents wildcard-style targeting mechanism. 

I understand that it might be a bit difficult to complete this json theme as there is no docuementation available. I would suggest you to use any third party tools using which you can easily generate a json 

For example you can use the embedded power bi report on this page to know about all the properties and their json labels for each visual 

https://curbal.com/product/json-theme-bundle-by-curbal

I hope this helps

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[AL_1234]

Also, I can't find a way to change the shape of cards for cardVisual.

I have tied using 

"shapeCustomRectangle" but it wont do any changes.