Examine source code of Ocean Blue Themes

{
  "manifest_version": 2,
  "name": "Ocean Blue Theme",
  "description": "A simple Firefox theme with ocean blue color style.",
  "version": "1.0",
  "theme": {
    "colors": {
      "frame": "#1E88E5",
      "tab_background_text": "#FFFFFF",
      "toolbar": "#BBDEFB",
      "toolbar_text": "#000000",
      "tab_line": "#1E88E5",
      "tab_selected": "#1E88E5",
      "toolbar_field": "#BBDEFB",
      "toolbar_field_text": "#000000",
      "popup": "#BBDEFB",
      "popup_text": "#000000"
    }
  },
  "icons": {
    "48": "icon.png",
    "96": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{abc93d58-8f59-4eb5-82bb-74a4baa2ba8f}"
    }
  }
}