Examine source code of Gradified

{
  "theme": {
    "images": {
      "theme_frame": "grad.png"
    },
    "colors": {
      "frame": "#61adeb",
      "tab_background_text": "#9c91ff"
    }
  },
  "version": "2.0",
  "name": "Gradified",
  "manifest_version": 2,
  "description": "Just playing around, really"
}