Examine source code of Higanbana

{
  "name": "Higanbana",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "20191230_000358.jpg"
    },
    "colors": {
      "frame": "rgba(204, 124, 49, 1)",
      "tab_background_text": "rgba(214, 160, 160, 1)",
      "toolbar_field": "rgba(214, 160, 160, 1)",
      "toolbar_field_text": "rgba(250, 175, 175, 1)"
    }
  }
}