Examine source code of Folhas by Tersin@

{
  "name": "Folhas by Tersin@",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Folhas by Tersina_.jpg"
    },
    "colors": {
      "toolbar": "rgba(247, 247, 247, 0)",
      "toolbar_field": "rgba(231, 240, 231, 0)",
      "toolbar_field_text": "rgba(15, 194, 15, 1)",
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(15, 194, 15, 1)",
      "bookmark_text": "rgba(15, 194, 15, 1)"
    }
  }
}