Theme issues, especially with slicers

Hey v-sgandrathi, thank you for your help! I was on vacation and as this is a work account, it was too. Sorry for the late response.

I've tried adding your solution to the slicer/* section but am now unable to import it into pbi.

"slicer": {
      "*": {
        "stylePreset": "Default",
        "general": [
          {
            "responsive": true,
            "keepLayerOrder": true,
            "outlineColor": { "solid": { "color": "#FFFFFF" } },
            "outlineWeight": 1,
            "orientation": 0
          }
        ],
        "padding": [{ "bottom": 5, "left": 5, "right": 5, "top": 10 }],
        "pendingChangesIcon": [
          {
            "color": { "solid": { "color": "#FFFFFF" } },
            "position": "left",
            "show": true,
            "showTooltip": false,
            "size": 11,
            "transparency": 0
          }
        ],
        "filterPane": {
          "background": { "color": "#FFFFFF" },
          "foreground": { "color": "#000000" }
        },
        "filterCard": {
          "background": { "color": "#F8F8F8" },
          "foreground": { "color": "#000000" }
        },
        "spacing": [

I cannot find another point to insert it. My schema validator also says, that it should be an array. Adding it into the general array, results in the same error:

Not sure if I misunderstood your instructions though, thank you for your help!