Examine source code of cypress

{
  "theme": {
    "images": {
      "theme_frame": "firefoxbanner.jpg"
    },
    "colors": {
      "frame": "#3c6b02",
      "tab_background_text": "#1f1401"
    }
  },
  "version": "2.0",
  "name": "cypress",
  "manifest_version": 2,
  "description": "van gogh cypress."
}