Examine source code of popfoxblue

{
  "name": "drakulafox",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Dark-Fox-Firefox-Theme.png"
    },
    "colors": {
      "frame": "rgba(55, 111, 184, 0.47)",
      "tab_background_text": "rgba(45, 44, 45, 1)",
      "toolbar": "rgba(63, 64, 66, 0.58)",
      "bookmark_text": "rgba(34, 85, 214, 0.93)",
      "toolbar_field": "rgba(45, 44, 45, 1)",
      "toolbar_field_text": "rgba(201, 201, 201, 1)"
    }
  }
}