Examine source code of Brightness by MaDonna

{
  "theme": {
    "images": {
      "theme_frame": "BrightnessHCustom.jpg"
    },
    "colors": {
      "frame": "#ff86c2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Brightness by MaDonna",
  "manifest_version": 2,
  "description": "flowers, bright, butterfly, butterflies, stars, sparkle, summer, pink, summer, spring,"
}