Examine source code of bleble

{
  "theme": {
    "images": {
      "theme_frame": "transcolorhead2c.jpg"
    },
    "colors": {
      "frame": "#050503",
      "tab_background_text": "#eaf5b8"
    }
  },
  "version": "2.0",
  "name": "bleble",
  "manifest_version": 2
}