Examine source code of Color Hatsune Bubbles

{
  "theme": {
    "images": {
      "theme_frame": "uuopu.jpg"
    },
    "colors": {
      "frame": "#d4c5c5",
      "tab_background_text": "#e6e3e3"
    }
  },
  "version": "2.0",
  "name": "Color Hatsune Bubbles",
  "manifest_version": 2,
  "description": "The name is a little stupid, sorry :D\nHope you like it!\nMiku Hatsune, Vocaloid, anime, girl, rainbow, colors, colorful"
}