Examine source code of RPG

{
  "name": "RPG",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "canvas2.png"
    },
    "colors": {
      "frame": "rgba(189, 189, 189, 1)",
      "tab_background_text": "rgba(209, 209, 209, 1)",
      "toolbar": "rgba(102, 54, 0, 0.69)",
      "bookmark_text": "rgba(171, 171, 171, 1)",
      "toolbar_field": "rgba(212, 212, 212, 0.87)",
      "toolbar_field_text": "rgba(117, 117, 117, 1)",
      "tab_line": "rgba(143, 130, 123, 1)"
    }
  }
}