Examine source code of Max Gray Theme

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Max Gray Theme",
  "description": "A simple gray theme",
  "theme": {
    "images": {
      "theme_frame": "black.jpg"
    },
    "colors": {
      "rame": "black",
      "tb_background_text": "white",
      "toolbar": "#333",
      "toolbar_text": "white"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{40c04445-2a45-408c-b045-eaf742cff52d}"
    }
  }
}