Examine source code of Platformboy dark theme

{
  "name": "Platformboy dark theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 186, 25, 1)",
      "toolbar": "rgba(51, 51, 51, 0.48)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 0, 0, 0.25)",
      "toolbar_field_text": "rgba(230, 230, 230, 1)",
      "tab_line": "rgba(255, 170, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2a6617ad-ecb3-4e1e-b6aa-6355b365e378}"
    }
  }
}