I'll see about maybe adding it, but in the meantime you can reproduce it (using default skin colours - customise as desired) like so:
Code:
[css=
margin: 5px auto;
width: 220px;
position: relative;
border-radius: 50px;
background-color: #444;
border: 1px solid #321;
box-shadow: inset 3px 3px 6px #171717, inset -3px -3px 6px #ccc;
][css=
width:70%; /* CHANGE THIS */
position: absolute;
left: 0px;
top: 0px;
bottom: 0px;
overflow: hidden;
][css=
width: 100%;
min-width: 24px;
background-color: #453;
border-radius: 50px;
box-shadow: inset 3px 3px 6px #cf9, inset -3px -3px 6px #171c11;
position: absolute;
left: 0px;
top: 0px;
bottom: 0px;
animation: expbarshine 5s linear infinite;
-webkit-animation: expbarshine 5s linear infinite;
][/css][/css][css=
position: relative;
display: block;
padding: 3px;
font-weight: bold;
text-align: center;
color: #ccc;
]700 / 1000[/css][/css]
... Huh, that's a lotta code! But it looks cool =3