Examine source code of Photon Blue Theme

{
  "name": "Photon Blue Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "4k-minimalist-wallpaper-14.jpg"
    },
    "colors": {
      "frame": "rgba(27, 30, 36, 1)",
      "tab_background_text": "rgba(49, 140, 150, 1)",
      "toolbar": "rgba(59, 86, 102, 0.7)",
      "bookmark_text": "rgba(56, 242, 255, 1)",
      "toolbar_field": "rgba(181, 191, 199, 1)",
      "toolbar_field_text": "rgba(222, 245, 255, 1)",
      "tab_line": "rgba(61, 197, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{25e50eff-8ace-4bcd-a26c-1dffd192cc79}"
    }
  }
}