Examine source code of Synth

{
  "name": "Synth",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "8hAf8sI.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(237, 5, 191, 1)",
      "toolbar": "rgba(20, 72, 217, 0.33)",
      "bookmark_text": "rgba(237, 5, 191, 1)",
      "toolbar_field": "rgba(5, 146, 240, 1)",
      "toolbar_field_text": "rgba(237, 5, 191, 1)"
    }
  }
}