@anarchaeopteryx

Sorry for butting in. I don't know if that's what you were looking for:

I made a couple of changes because I couldn't see it with the background color that I had.

.upvote-button.upvoted {
box-shadow: 5px 5px 5px #e7e7e7;
background-color: #abcabc;
cursor: pointer;
}

And this is to animate it up on hover a bit and give it some volume.

button.upvote-button.upvoted:hover {
transform:translate(3px, 3px);
box-shadow:2px 2px 5px #e7e7e7;
}