Examine source code of sleepy painting

{
  "theme": {
    "images": {
      "theme_frame": "sleepypainting.jpg"
    },
    "colors": {
      "frame": "#f7f2f2",
      "tab_background_text": "#5ef2e8"
    }
  },
  "version": "2.0",
  "name": "sleepy painting",
  "manifest_version": 2,
  "description": "a sleeping woman painting"
}