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Trello: colour-blind-friendly labels

Adds a diagonal stripe pattern to labels so they can be told apart regardless of colour.

Code to copy

/* Colour-blind-friendly stripe pattern on card labels */
.card-label,
[data-testid="card-label"] {
  background-image: repeating-linear-gradient(
    45deg,
    rgba(0,0,0,0.28) 0,
    rgba(0,0,0,0.28) 3px,
    transparent 3px,
    transparent 7px
  ) !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.