Good stuff Chosen and i'd really just recommend taking your idea further and add it to the Extra properties section of the style
in there for no inline css. i tend to avoid inline anything at all (except for temporary testing crapola)

matter of fact, what i usually do for my sites is to also remove those little images on the Reply, Quote, Quick Reply... buttons too.
i add this there as well (just a preference, mind you

)
.post-buttons img {
display:none;
}