Examine source code of Imagination 1

{
  "name": "Imagination",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Biology-Widescreen-Wallpaper.jpg"
    },
    "colors": {
      "frame": "rgba(41, 87, 186, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(20, 20, 20, 1)",
      "bookmark_text": "rgba(247, 232, 232, 1)",
      "toolbar_field": "rgba(148, 25, 230, 1)",
      "toolbar_field_text": "rgba(20, 12, 12, 1)"
    }
  }
}