Changing caret color with CSS

With all of the fun stuff that you can do in CSS, you can even change the caret color: that's right.
Caret is a thin blinking line that appears inside inputs, textboxes, etc.

Just with one line of CSS:

.selector {
  caret-color: red;
} 

And the support is basically universal too! (~94% at the time of writing this post)