Examine source code of 45128-Kontrast3

{
  "name": "45128-Kontrast",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "weiss256.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(47, 60, 237, 1)",
      "bookmark_text": "rgba(255, 255, 0, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(255, 0, 0, 1)",
      "button_background_active": "red",
      "button_background_hover": "cyan"
    }
  }
}