Examine source code of purple time

{
  "name": "purple time",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 83, 206, 1)",
      "toolbar": "rgba(96, 56, 131, 1)",
      "bookmark_text": "rgba(191, 0, 255, 1)",
      "toolbar_field": "rgba(255, 83, 206, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(191, 0, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b0954d2b-1bf0-4fc8-a2d1-69fac05fd7bb}"
    }
  }
}