Examine source code of Night Vale Purple

{
  "name": "Night Vale Purple",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "night vale wallpaper 2 (narrower).png"
    },
    "colors": {
      "frame": "rgba(56, 26, 77, 1)",
      "tab_background_text": "rgba(207, 171, 222, 1)",
      "toolbar": "rgba(56, 26, 77, 1)",
      "bookmark_text": "rgba(207, 171, 222, 1)",
      "toolbar_field": "rgba(56, 26, 77, 1)",
      "toolbar_field_text": "rgba(207, 171, 222, 1)",
      "tab_line": "rgba(207, 171, 222, 1)"
    }
  }
}