Examine source code of Waking To Sunshine

{
  "name": "Waking To Sunshine",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(254, 255, 214, 1)",
      "tab_background_text": "rgba(3, 3, 3, 1)",
      "toolbar": "rgba(253, 255, 214, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(253, 255, 214, 0.07)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f3715a6-ec7a-4228-b028-ab87a64b6453}"
    }
  }
}