Examine source code of Abstract Purple Triangles

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Abstract Purple Triangles",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(67, 58, 105, 0.17)",
      "toolbar_text": "rgb(247, 253, 251)",
      "frame": "rgb(78, 54, 112)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(67, 58, 105)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(67, 58, 105)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c1502ee-bb24-4dcb-92b9-2ebcc4f90669}"
    }
  }
}