Check this code out and see if you think it would be a good addition to the theme:

btn {
  position: relative;
  border: solid #555;
  border-width:  1px;
  margin: 2px;
}

.btn:before {
  position: absolute;
  top: 1px;
  bottom: 1px;
  left: -4px; /* margin + border */
  right: -4px; /* margin + border */
  display: block;
  border: solid #555;
  border-width: 2px;
  content: "";
  @include transform(rotate(.1deg));
}


.btn:after {
  position: absolute;
  top: 1px;
  bottom: 1px;
  left: -4px; /* margin + border */
  right: -4px; /* margin + border */
  display: block;
  border: solid #555;
  border-width: 3px;
  content: "";
  @include transform(rotate(-.7deg));
}

Bootstrap 4 is almost here, would be great to have a bootstrap 4 version of this really nice little thing :)

As far as I can tell, glyphicon-ok and glyphicon-remove (as used for form validation) are not supported, presumably due to the font.

Would it be possible to provide a simple fallback?

it would be excellent if Bootsketch could be installed via Bower - where apparently it's not registered yet (I've tried both "bootsketch" and "wirestrap" - the latter is still used in bower.json)

The bootsketch.css contains a wrong definition for ".modal-backdrop" class.

The css in bootsketch:

.modal-backdrop{
position:fixed;
top:0;
right:0;
bottom:0;
left:0;
z-index:1040;
background-color:#000}

But this couses the backdrop to be in front and the modal is displayed behind it.
If you change it back to the original (from bootstrap 3.3.2):

.modal-backdrop {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  background-color: #000;
}

It is working again. Cheers.

Anyone using HTTPS Everywhere or a similar plugin won't be able to use the site as the Google Fonts stylesheet is loaded over explicit http.

Consider adjusting it to use explicit https or implicit (through a protocol relative url).