Examine source code of Oehli

{
  "name": "Oehli",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "metallic_3000x200.png"
    },
    "colors": {
      "toolbar": "rgba(150, 148, 148, 0.36)",
      "toolbar_field": "rgba(43, 43, 43, 0.65)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "frame": "rgba(77, 77, 77, 1)",
      "tab_background_text": "rgba(122, 122, 122, 1)",
      "bookmark_text": "rgba(245, 245, 245, 1)"
    }
  }
}