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Mark Custom HTML tags (security review)

Highlights Custom HTML tags with a diagonal pattern, because they carry arbitrary script and need a security review.

Code to copy

/* Custom HTML tags deserve a security review */
tr:has([title*="Custom HTML"]),
tr:has([aria-label*="Custom HTML"]) {
  background: repeating-linear-gradient(
    45deg,
    rgba(234,67,53,0.08),
    rgba(234,67,53,0.08) 10px,
    rgba(234,67,53,0.16) 10px,
    rgba(234,67,53,0.16) 20px
  ) !important;
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's CSS panel and save — the effect appears instantly.