Examine source code of Cactus Close-Up

{
  "name": "Cactus Close-Up",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Cactus.jpg"
    },
    "colors": {
      "frame": "rgba(167, 194, 147, 1)",
      "tab_background_text": "rgba(233, 240, 26, 1)",
      "toolbar": "rgba(167, 194, 147, 1)",
      "bookmark_text": "rgba(233, 240, 26, 1)",
      "toolbar_field": "rgba(167, 194, 147, 1)",
      "toolbar_field_text": "rgba(233, 240, 26, 1)",
      "tab_line": "rgba(55, 89, 35, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b7059ca2-3d1f-4de8-8355-05baa62efe6e}"
    }
  }
}