Examine source code of Yoshi theme

{
  "theme": {
    "images": {
      "theme_frame": "Sinttulo-1.jpg"
    },
    "colors": {
      "frame": "#3b9429",
      "tab_background_text": "#33753f"
    }
  },
  "version": "2.0",
  "name": "Yoshi theme",
  "manifest_version": 2,
  "description": "Yoshi theme"
}