Examine source code of Dark Sparkles

{
  "name": "Dark Sparkles",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "x2.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(224, 152, 186, 1)",
      "toolbar": "rgba(212, 47, 179, 0.23)",
      "bookmark_text": "rgba(113, 184, 182, 1)",
      "toolbar_field": "rgba(0, 11, 18, 0.79)",
      "toolbar_field_text": "rgba(122, 122, 122, 1)"
    }
  }
}