Examine source code of Minimalist Gaming Theme

{
  "name": "Minimalist Gaming Theme",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(43, 43, 43, 1)",
      "tab_background_text": "rgba(84, 84, 84, 1)",
      "toolbar": "rgba(64, 64, 64, 1)",
      "bookmark_text": "rgba(217, 50, 50, 1)",
      "toolbar_field": "rgba(110, 110, 110, 1)",
      "toolbar_field_text": "rgba(212, 4, 0, 1)"
    }
  }
}