Examine source code of Mixtape

{
  "name": "Mixtape",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "graffititi.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(184, 184, 184, 0.81)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(230, 230, 230, 1)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(0, 255, 162, 0.54)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{74b00095-12b3-4ca7-8710-3e3854af33e1}"
    }
  }
}