Examine source code of Make Your Mood Happy

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#bdbbbb",
      "tab_background_text": "#c94141"
    }
  },
  "version": "2.0",
  "name": "Make Your Mood Happy",
  "manifest_version": 2,
  "description": "If you are constantly using laptop and starting frustrating then use this lovely and funny theme that's includes funny images."
}