1. CSS caret-color

    The `caret-color` property allows the color to be set of the caret (blinking text insertion pointer) in an editable text area.

  2. CSS color-adjust

    The `color-adjust` (or `-webkit-print-color-adjust` as prefixed in WebKit/Blink browsers) property is a non-standard CSS extension that can be used to force printing of background colors and images.

  3. css property: text-decoration-line: `blink`

  4. css property: text-decoration: `blink`

  5. html element: blink

  6. javascript built-in: string: blink