Examine source code of Blue Cube´s

{
  "name": "Blue Cube´s",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "bluen.jpg"
    },
    "colors": {
      "frame": "rgba(247, 247, 247, 0)",
      "tab_background_text": "rgba(0, 221, 255, 1)",
      "toolbar": "rgba(0, 200, 240, 0.28)",
      "bookmark_text": "rgba(0, 231, 252, 1)",
      "toolbar_field": "rgba(5, 172, 255, 0.59)",
      "toolbar_field_text": "rgba(0, 221, 255, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  }
}