Examine source code of Wheat Close Up

{
  "name": "Wheat Close Up",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "WheatH.jpg"
    },
    "colors": {
      "frame": "rgba(43, 94, 4, 1)",
      "tab_background_text": "rgba(249, 255, 158, 1)",
      "toolbar": "rgba(41, 97, 4, 0)",
      "bookmark_text": "rgba(249, 255, 158, 1)",
      "toolbar_field": "rgba(41, 97, 4, 0.09)",
      "toolbar_field_text": "rgba(249, 255, 158, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{30bd07bc-6721-49a8-afd4-2fb84550dd33}"
    }
  }
}