Examine source code of Stars theme 4k

{
  "name": "Stars theme 4k",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ds.jpg"
    },
    "colors": {
      "frame": "rgba(101, 104, 110, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 58, 230, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d835b691-ac0a-4be6-a38e-de4bc7c8b114}"
    }
  }
}