Examine source code of Happy 2020

{
  "name": "Happy 2020",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Happy 2020.jpg"
    },
    "colors": {
      "frame": "rgba(14, 14, 15, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(4, 12, 38, 0.16)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(4, 18, 56, 0.29)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)"
    }
  }
}