Examine source code of vink theme

{
  "name": "Gliviik",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "2491cf58ba927b1ec64144048f5e7feb.jpg"
    },
    "colors": {
      "frame": "rgba(5, 162, 240, 0.84)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(54, 11, 224, 1)",
      "toolbar_field": "rgba(237, 12, 91, 0.71)"
    }
  }
}