Examine source code of Dock by M♥Donna

{
  "name": "Dock by M♥Donna",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(102, 49, 51, 1)",
      "tab_background_text": "rgba(244, 250, 155, 1)",
      "toolbar": "rgba(102, 49, 50, 0)",
      "bookmark_text": "rgba(244, 250, 155, 1)",
      "toolbar_field": "rgba(102, 49, 50, 0.09)",
      "toolbar_field_text": "rgba(244, 250, 155, 1)",
      "tab_line": "rgba(244, 250, 155, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{efca1121-7dd2-4b44-9a9a-505a33c61540}"
    }
  }
}