Examine source code of minecraft blocky theme

{
  "name": "minecraft blocky theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "minecraft.jpg"
    },
    "colors": {
      "frame": "rgba(143, 69, 0, 1)",
      "tab_background_text": "rgba(46, 11, 11, 1)",
      "toolbar": "rgba(96, 173, 45, 1)",
      "bookmark_text": "rgba(51, 6, 6, 1)",
      "toolbar_field": "rgba(163, 139, 139, 1)",
      "toolbar_field_text": "rgba(61, 1, 1, 1)"
    }
  }
}