Examine source code of CHARCOAL_TANGERINE

{
  "name": "CHARCOAL_TANGERINE",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "charcoal.png"
    },
    "colors": {
      "frame": "rgba(10, 10, 10, 1)",
      "tab_background_text": "rgba(255, 140, 0, 1)",
      "toolbar": "rgba(43, 43, 43, 1)",
      "bookmark_text": "rgba(255, 140, 0, 1)",
      "toolbar_field": "rgba(184, 184, 184, 1)",
      "toolbar_field_text": "rgba(43, 43, 43, 1)",
      "tab_line": "rgba(255, 140, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f00cc171-4b11-4de6-9225-9ccb8cf29d59}"
    }
  }
}