Examine source code of Jungle-ish

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#117810",
      "tab_background_text": "#117810"
    }
  },
  "version": "2.0",
  "name": "Jungle-ish",
  "manifest_version": 2,
  "description": "Just some green leaves and trees."
}