Examine source code of rainbow sea

{
  "name": "rainbow explosion",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "rainbow.jpg"
    },
    "colors": {
      "frame": "rgba(55, 20, 199, 0.7)",
      "tab_background_text": "rgba(240, 9, 182, 1)",
      "toolbar": "rgba(189, 227, 0, 1)",
      "bookmark_text": "rgba(238, 0, 255, 1)",
      "toolbar_field": "rgba(217, 146, 39, 1)",
      "toolbar_field_text": "rgba(27, 157, 222, 0.55)"
    }
  }
}