Examine source code of Green RGB

{
  "name": "Green RGB",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "green.jpg"
    },
    "colors": {
      "frame": "rgba(0, 51, 9, 1)",
      "tab_background_text": "rgba(0, 255, 26, 1)",
      "toolbar": "rgba(41, 41, 41, 1)",
      "bookmark_text": "rgba(0, 217, 29, 1)",
      "toolbar_field": "rgba(69, 69, 69, 1)",
      "toolbar_field_text": "rgba(0, 217, 29, 1)",
      "tab_line": "rgba(0, 217, 29, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dc69e72f-ff34-4784-a4e6-2dd116d65739}"
    }
  }
}