Examine source code of Slipknot color theme

{
  "name": "Slipknot theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "sliplogo(3).jpg"
    },
    "colors": {
      "frame": "rgba(51, 4, 4, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(48, 34, 34, 1)",
      "bookmark_text": "rgba(255, 3, 3, 1)",
      "toolbar_field": "rgba(89, 73, 73, 1)",
      "toolbar_field_text": "rgba(179, 6, 6, 1)",
      "tab_line": "rgba(255, 3, 3, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1badcaff-bccb-421f-9727-69ec411fa1b4}"
    }
  }
}