Examine source code of skimpy2

{
  "theme": {
    "images": {
      "theme_frame": "personal.jpg"
    },
    "colors": {
      "frame": "#2d15e6",
      "tab_background_text": "#fcf7f7"
    }
  },
  "version": "2.0",
  "name": "skimpy2",
  "manifest_version": 2,
  "description": "a banner"
}