Examine source code of Sun Yellow Dark

{
  "name": "Sun Yellow Dark",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "orange-2491075_1280.jpg"
    },
    "colors": {
      "frame": "rgba(102, 36, 36, 1)",
      "tab_background_text": "rgba(163, 143, 104, 1)",
      "toolbar": "rgba(240, 199, 53, 1)",
      "bookmark_text": "rgba(105, 42, 42, 1)",
      "toolbar_field": "rgba(128, 24, 21, 1)",
      "toolbar_field_text": "rgba(224, 198, 103, 1)",
      "tab_line": "rgba(255, 255, 255, 0.46)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ac23b72d-e443-4048-abfc-9eef7d9f2814}"
    }
  }
}