Examine source code of Micro Bubbles

{
  "name": "Micro Bubbles",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "microcircles.jpg"
    },
    "colors": {
      "frame": "rgba(209, 24, 222, 1)",
      "tab_background_text": "rgba(100, 223, 242, 1)"
    }
  }
}