Examine source code of Disco Panzer

{
  "name": "Disco Panzer",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ezgif-4-9699d38947.png"
    },
    "colors": {
      "frame": "rgba(128, 136, 156, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(47, 97, 99, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6a6fbaab-d45e-4698-973b-bd00e81eff61}"
    }
  }
}