Examine source code of Alpha Forest

{
  "theme": {
    "images": {
      "theme_frame": "Alpha_Forest_Header.jpg"
    },
    "colors": {
      "frame": "#a18181",
      "tab_background_text": "#4a2828"
    }
  },
  "version": "2.0",
  "name": "Alpha Forest",
  "manifest_version": 2,
  "description": "Alpha Forest"
}