Examine source code of hippo_yeah

{
  "theme": {
    "images": {
      "theme_frame": "hippo_up.jpg"
    },
    "colors": {
      "frame": "#878787",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "hippo_yeah",
  "manifest_version": 2,
  "description": "Hippo design"
}