Examine source code of Black & Pink 2

{
  "name": "Black & Pink 2",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Heart_icon_red_hollowblack.png"
    },
    "colors": {
      "frame": "rgba(246, 118, 149, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(5, 0, 0, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(237, 82, 120, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(237, 82, 120, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e0c977f4-f09b-457b-90a8-00b066e33a11}"
    }
  }
}