Examine source code of bionicle(blue)

{
  "name": "bionicle(blue)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "firefox.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 0)",
      "tab_background_text": "rgba(30, 9, 150, 1)",
      "toolbar": "rgba(48, 48, 48, 0.42)",
      "bookmark_text": "rgba(30, 9, 150, 1)",
      "toolbar_field": "rgba(48, 48, 48, 0.42)",
      "toolbar_field_text": "rgba(63, 50, 237, 0.56)",
      "tab_line": "rgba(63, 50, 237, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1e4384ec-7d4c-4116-a8a2-4f71769964a4}"
    }
  }
}