Examine source code of Gabon

{
  "name": "cosmos",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "5edfbdf197266-logorpga-smallpng.png"
    },
    "colors": {
      "frame": "rgba(142, 250, 212, 1)",
      "tab_background_text": "rgba(242, 242, 247, 1)",
      "toolbar": "rgba(8, 250, 0, 1)",
      "bookmark_text": "rgba(247, 242, 242, 1)",
      "toolbar_field": "rgba(201, 250, 5, 1)",
      "toolbar_field_text": "rgba(242, 242, 247, 1)"
    }
  }
}