Examine source code of White Brush Stroke

{
  "name": "from above",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "basic-2.png"
    },
    "colors": {
      "frame": "rgba(167, 214, 154, 1)",
      "tab_background_text": "rgba(3, 3, 3, 1)",
      "toolbar": "rgba(160, 172, 232, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(224, 224, 224, 1)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(0, 194, 146, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7ab4ce37-bca2-42fb-af4f-5880a3225003}"
    }
  }
}