Examine source code of Discreet Orange

{
  "name": "Discreet Orange",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "theme 151515.png"
    },
    "colors": {
      "frame": "rgba(15, 15, 15, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(240, 240, 240, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 140, 0, 1)"
    }
  }
}