Examine source code of Google theme 2

{
  "name": "Google theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "green.jpg"
    },
    "colors": {
      "frame": "rgba(5, 255, 26, 1)",
      "tab_background_text": "rgba(5, 34, 255, 1)",
      "toolbar": "rgba(247, 247, 247, 1)",
      "bookmark_text": "rgba(242, 255, 0, 1)",
      "toolbar_field": "rgba(240, 240, 240, 1)",
      "toolbar_field_text": "rgba(255, 0, 0, 1)"
    }
  }
}