Examine source code of ulka

{
  "name": "ulka",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Krrish-3-720x405.jpg"
    },
    "colors": {
      "frame": "rgba(8, 27, 71, 1)",
      "tab_background_text": "rgba(189, 59, 59, 1)",
      "toolbar": "rgba(18, 102, 148, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(51, 77, 2, 1)",
      "toolbar_field_text": "rgba(150, 106, 106, 1)",
      "tab_line": "rgba(240, 5, 5, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bfd1fb22-a3fb-470f-b356-8a8bb1f43db3}"
    }
  }
}