Examine source code of Campfire by ♥Donna

{
  "name": "Campfire by ♥Donna",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(26, 48, 33, 1)",
      "tab_background_text": "rgba(248, 255, 171, 1)",
      "toolbar": "rgba(28, 51, 36, 0)",
      "bookmark_text": "rgba(248, 255, 171, 1)",
      "toolbar_field": "rgba(28, 51, 36, 0.1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8af2c2c8-8827-41e0-9d25-3dbffb1b205d}"
    }
  }
}