Examine source code of monochromatic black

{
  "name": "monochromatic black",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "waves.png"
    },
    "colors": {
      "frame": "rgba(28, 28, 28, 1)",
      "tab_background_text": "rgba(236, 236, 236, 1)",
      "toolbar": "rgba(28, 28, 28, 1)",
      "bookmark_text": "rgba(236, 236, 236, 1)",
      "toolbar_field": "rgba(28, 28, 28, 1)",
      "toolbar_field_text": "rgba(236, 236, 236, 1)",
      "tab_line": "rgba(28, 28, 28, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4ed42f74-4001-4746-b76a-64fe7fc83245}"
    }
  }
}