Examine source code of godless

{
  "name": "Atheist",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "FF0091.jpg"
    },
    "colors": {
      "frame": "rgba(9, 221, 240, 1)",
      "tab_background_text": "rgba(240, 17, 17, 1)"
    }
  }
}