Examine source code of Twin Saints

{
  "name": "Twin Saints",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "jeannes.png"
    },
    "colors": {
      "toolbar": "rgba(235, 228, 228, 0.49)",
      "toolbar_field": "rgba(227, 227, 227, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "frame": "rgba(60, 63, 71, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)"
    }
  }
}