Examine source code of Kelp Forest

{
  "name": "IMG-1346",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "IMG-1346(1).jpg"
    },
    "colors": {
      "frame": "rgba(197, 198, 215, 1)",
      "tab_background_text": "rgba(57, 59, 49, 1)",
      "toolbar": "rgba(39, 55, 92, 0.5)",
      "bookmark_text": "rgba(25, 107, 140, 1)",
      "toolbar_field": "rgba(71, 95, 99, 0.69)",
      "toolbar_field_text": "rgba(65, 69, 54, 1)",
      "tab_line": "rgba(161, 189, 194, 0.27)"
    }
  }
}