Examine source code of Gradient Modern Design

{
  "name": "Gradient Modern Design",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "html-color-codes-color-tutorials-hero-00e10b1f.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0.39)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(10, 0, 0, 0.33)",
      "toolbar_field_text": "rgba(0, 13, 31, 1)"
    }
  }
}