That’s a good idea! You can customize the style of the sharing buttons with some CSS. Since Ryu already loads the Genericons for you, you will only have to style the buttons, add the icons before each button, and set each icon to use the Genericons font.
Try adding the following CSS code to your theme stylesheet, or to your custom CSS editor under Appearance > Edit CSS in your dashboard:
/* Delete existing icons, and that white background appearing below each button */
.entry-content .sharedaddy a.sd-button {
background: none;
border: 0 none !important;
box-shadow: 0 0 0 0;
color: #fff !important;
}
.sharedaddy ul li a.sd-button > span {
background-image: none;
}
.sharedaddy ul li .sd-button span.share-count {
color: #fff;
}
/* Before each sharing button, we will use the Genericons font */
.sharedaddy a.sd-button:before {
display: inline-block;
-webkit-font-smoothing: antialiased;
font: normal 16px/1 Genericons;
font-size: 1.6rem;
vertical-align: top;
}
/* Define the icon to use with each button */
.sharedaddy a.share-twitter:before {
content: '\f202';
}
.sharedaddy a.share-facebook:before {
content: '\f203';
}
.sharedaddy a.share-google-plus-1:before {
content: '\f206';
}
.sharedaddy a.share-email:before {
content: '\f410';
}
.sharedaddy a.share-press-this:before {
content: '\f205';
}
That’s only an example; you’ll probably need to customize things a bit more to give it a perfect look! But you should be able to do everything through CSS.
I hope this helps.
Oh, and please share the results with us! I love Genericons, and I’m sure the results will look great!