Examine source code of Tranquil Seas

{
  "name": "Tranquil Seas",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(15, 250, 219, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(15, 252, 228, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(6, 69, 87, 0.1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(245, 245, 245, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c261b12-702d-4f8d-8282-ade0ee39c56e}"
    }
  }
}