Examine source code of green_boat

{
  "theme": {
    "images": {
      "theme_frame": "green_boat-header.jpg"
    },
    "colors": {
      "frame": "#08ff0c",
      "tab_background_text": "#08ff0c"
    }
  },
  "version": "2.0",
  "name": "green_boat",
  "manifest_version": 2
}