Examine source code of Lion King by M♥Donna

{
  "name": "Lion King by M♥Donna",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(5, 5, 5, 1)",
      "tab_background_text": "rgba(237, 224, 196, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(237, 224, 196, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.06)",
      "toolbar_field_text": "rgba(237, 224, 196, 1)",
      "tab_line": "rgba(237, 224, 196, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{89139c60-4027-4b0b-9123-5eb8da10b55f}"
    }
  }
}