Examine source code of Google Chrome Appearance

{
  "name": "Google Chrome Appearance",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "New Project (2).jpg"
    },
    "colors": {
      "toolbar": "rgba(200, 200, 200, 1)",
      "toolbar_field": "rgba(241, 243, 244, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "frame": "rgba(179, 179, 179, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)"
    }
  }
}