Examine source code of Karkat

{
  "theme": {
    "images": {
      "theme_frame": "derp1.png"
    },
    "colors": {
      "frame": "#ff6730",
      "tab_background_text": "#d4d4d4"
    }
  },
  "version": "2.0",
  "name": "Karkat",
  "manifest_version": 2
}