Examine source code of dramiz - Steam Machine

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "dramiz - Steam Machine Original",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(31, 35, 44)",
      "toolbar_text": "rgb(221, 51, 22)",
      "frame": "rgb(31, 35, 44)",
      "tab_background_text": "rgb(221, 51, 22)",
      "toolbar_field": "rgb(31, 35, 44)",
      "toolbar_field_text": "rgb(221, 51, 22)",
      "tab_line": "rgb(221, 51, 22)",
      "popup": "rgb(31, 35, 44)",
      "popup_text": "rgb(221, 51, 22)",
      "ntp_text": "rgb(0, 0, 0)",
      "tab_selected": "rgb(221, 51, 22)",
      "tab_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(221, 51, 22)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f7aab165-ab86-4bc4-8706-08fffff46dc9}"
    }
  }
}