Examine source code of Data2020

{
  "name": "Data2020",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "data2020bck.png"
    },
    "colors": {
      "frame": "rgba(12, 21, 24, 1)",
      "tab_background_text": "rgba(74, 137, 152, 1)",
      "toolbar": "rgba(12, 21, 24, 1)",
      "bookmark_text": "rgba(108, 200, 222, 1)",
      "toolbar_field": "rgba(12, 21, 24, 1)",
      "toolbar_field_text": "rgba(108, 200, 222, 1)"
    }
  }
}