Examine source code of dark_red_pop

{
  "name": "dark_red_pop",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "header für firefox.png"
    },
    "colors": {
      "frame": "rgba(15, 15, 15, 1)",
      "tab_background_text": "rgba(255, 0, 0, 1)",
      "toolbar": "rgba(26, 26, 26, 1)",
      "bookmark_text": "rgba(255, 0, 0, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(255, 0, 0, 1)",
      "tab_line": "rgba(255, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1c973782-3eac-48fc-baa1-acbd4cbb3308}"
    }
  }
}