Examine source code of Hollow knight theme

{
  "name": "Hollow knight theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ee.jpg"
    },
    "colors": {
      "frame": "rgba(55, 185, 214, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "bookmark_text": "rgba(158, 214, 235, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(0, 196, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{40c092e0-98af-4902-a76e-946aac0bb76e}"
    }
  }
}