Examine source code of Pinecones & Fir

{
  "name": "Pinecones & Fir",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "PineconesBannerExtension.png"
    },
    "colors": {
      "toolbar": "rgba(89, 122, 93, 1)",
      "toolbar_field": "rgba(71, 63, 45, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "frame": "rgba(44, 54, 44, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)"
    }
  }
}