Examine source code of Small Winter Trees

{
  "name": "Small Winter Trees",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "SmallWinterTreesH.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(13, 48, 2, 1)",
      "toolbar": "rgba(255, 255, 255, 0)",
      "bookmark_text": "rgba(18, 64, 1, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.08)",
      "toolbar_field_text": "rgba(24, 71, 3, 1)",
      "tab_line": "rgba(10, 10, 10, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0f004e83-47ce-46d9-beeb-9f92c2522a27}"
    }
  }
}