Examine source code of Dark Bleu Matte Black

{
  "name": "Asset 1",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Asset 1.png"
    },
    "colors": {
      "frame": "rgba(31, 29, 29, 1)",
      "tab_background_text": "rgba(206, 206, 214, 1)",
      "toolbar": "rgba(30, 30, 30, 1)",
      "bookmark_text": "rgba(29, 60, 235, 1)",
      "toolbar_field": "rgba(55, 55, 55, 1)",
      "toolbar_field_text": "rgba(133, 119, 119, 1)"
    }
  }
}