Examine source code of Gliviik theme

{
  "name": "Gliviik",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "eb0985e76f084797fdc0d19a32b06ac1.jpg"
    },
    "colors": {
      "frame": "rgba(175, 204, 219, 0.84)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(137, 125, 181, 1)",
      "toolbar_field": "rgba(31, 25, 27, 0.71)"
    }
  }
}