Examine source code of simply basic

{
  "name": "simply basic",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "1x1.png"
    },
    "colors": {
      "frame": "rgba(255, 105, 105, 0.13)",
      "tab_background_text": "rgba(0, 255, 115, 0.19)",
      "toolbar": "rgba(189, 114, 111, 0.28)",
      "bookmark_text": "rgba(105, 228, 255, 0.62)",
      "toolbar_field": "rgba(191, 209, 255, 0.37)",
      "toolbar_field_text": "rgba(50, 194, 60, 0.68)",
      "tab_line": "rgba(0, 250, 229, 0.38)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7e9a8a78-a0e8-4718-969a-e2e9651e0544}"
    }
  }
}