Examine source code of Green Gear (Gif)

{
  "name": "Green X (Gif)",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "green.gif"
    },
    "colors": {
      "toolbar": "rgba(0, 71, 21, 0.95)",
      "toolbar_field": "rgba(37, 168, 78, 0.98)",
      "toolbar_field_text": "rgba(5, 41, 0, 1)",
      "frame": "rgba(0, 72, 21, 1)",
      "tab_background_text": "rgba(193, 245, 210, 1)",
      "bookmark_text": "rgba(172, 242, 194, 1)"
    }
  }
}