Examine source code of Green Variation

{
  "name": "Green Variation",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "771874.jpg"
    },
    "colors": {
      "toolbar": "rgba(155, 189, 159, 1)",
      "toolbar_field": "rgba(231, 245, 232, 1)",
      "toolbar_field_text": "rgba(5, 5, 5, 0.94)",
      "frame": "rgba(212, 230, 175, 0.89)",
      "tab_background_text": "rgba(155, 189, 159, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)"
    }
  }
}