Examine source code of Evil Mastermind

{
  "theme": {
    "images": {
      "theme_frame": "evilmastermindtoolbar.JPG"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#00d2f7"
    }
  },
  "version": "2.0",
  "name": "Evil Mastermind",
  "manifest_version": 2,
  "description": "This is a picture of me with a mirror I played around with and thought it was cool."
}