Examine source code of Happy New Year

{
  "name": "Happy New Year",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "2018a.jpg"
    },
    "colors": {
      "frame": "#7c0e13",
      "tab_background_text": "#fffcd1",
      "toolbar": "rgba(250, 215, 216, 0.09)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(247, 203, 145, 1)"
    }
  }
}