Examine source code of No one will use it

{
  "name": "No one will use it",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "betterOne.png"
    },
    "colors": {
      "frame": "rgba(168, 255, 54, 1)",
      "tab_background_text": "rgba(153, 31, 24, 1)",
      "toolbar": "rgba(255, 143, 234, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(168, 255, 54, 1)",
      "toolbar_field_text": "rgba(153, 31, 24, 1)"
    }
  }
}