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Claude: custom accent color

Replaces the default orange accent with blue for buttons and links.

Code to copy

/* Custom accent color for primary buttons and links */
button[aria-label*="send" i],
button[type="submit"] {
  background: #2563eb !important;
  border-color: #2563eb !important;
}
a:not([class]) { color: #2563eb !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.