Examine source code of Deep Indigo

{
  "name": "Deep Indigo",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "purptop.png"
    },
    "colors": {
      "frame": "rgba(8, 10, 34, 1)",
      "tab_background_text": "rgba(255, 255, 255, 0.72)",
      "toolbar": "rgba(31, 33, 62, 1)",
      "bookmark_text": "rgba(255, 255, 255, 0.96)",
      "toolbar_field": "rgba(54, 57, 90, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 0.48)"
    }
  }
}