Examine source code of Cyan theme for Firefox

{
  "name": "Cyan theme for Firefox",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "cyan.png"
    },
    "colors": {
      "frame": "rgba(89, 196, 216, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(89, 196, 216, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(33, 37, 45, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(3, 245, 31, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f0894c37-2bbe-4d57-9259-b89e5c6f695e}"
    }
  }
}