Examine source code of bushtuber v2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "bushtuber v2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(80, 14, 5, 0.7)",
      "toolbar_text": "rgb(233, 129, 73)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(252, 139, 82)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 30, 78)",
      "tab_line": "rgb(255, 0, 0)",
      "popup": "rgb(67, 67, 70)",
      "popup_text": "rgb(223, 225, 229)",
      "tab_loading": "rgb(255, 0, 0)"
    }
  }
}