Improve CSS for hex-code text fields

There is room for improvement in the CSS for the input fields where the user enters a hexadecimal RGB-code.

This is the current CSS used:

.color-form .form-text {
  text-align: left;
  margin-right: 5px; /* LTR */
  cursor: pointer;
}

I suggest the following:

.color-form .form-text {
  text-align: left;
  margin-right: 5px; /* LTR */
  cursor: pointer;

  /** additions **/

  /** The generous padding renders space to give the user a better preview of the color since the text is blocking the view */
  padding: 0.5em 1em;

  /** Monospace font will make it easer to see how many characters have been entered and also make the hexcode look more aligned **/
  font-family: monospace;

  /** Monospace fonts are usually smaller than other fonts so we make it bigger. **/
  /** Not sure about the size compensation norm for monospace though. This works for me. **/
  font-size: 1.25em;

  /** Due to the offset caused by the extra padding, aligning the text to the center of the field gives a better feel when entering text **/
  text-align: center;

  /** By making the border solid, we give the field a more 'palette look' rather than 'enter-value-here look' **/
  /** We use a fixed one pixel width since the dimension is small which increases the risk of round-off errors if using 'em' **/
  /** The color of the border will be taken from 'color' which makes it the same as the text: dynamic by JavaScript **/
  border: 1px solid;
}

For HTML of the above mentioned text field please see #315813: Improve HTML for hex-code text fields.

I appreciate feedback!