
Make It Disappear
<style type="text/css">
.rate { display: none; }
</style>
Nb, to remove the rate bar completely, so that people can't rate you on your rate & comment page either,
just go to the bottom of your edit profile page and select "No" where it says "Allow other users to rate me".

Borders
To get rid of the rate bar border:
<style type="text/css">
.rate, .rate td { border: none; }
</style>
Or, to put a border of your own on it:
<style type="text/css">
.rate { border: 1px solid deeppink; }
.rate td { border: none; }
</style>
Nb, the
.rate td { border: none; } part is because the rate table has an inner border
too.
[ More Border Styles ]

Background
To set a background color:
<style type="text/css">
.rate { background: red; }
</style>
Or a background image:
<style type="text/css">
.rate { background: url('http://www.PATH TO YOUR IMAGE.gif'); }
</style>
More on
[ Backgrounds ]

Getting Rid of the White Background
To get rid of the white background too, just apply the page background color to
.rate td:
<style type="text/css">
.rate td { background: black; }
</style>

Text Styles
To change the rate bar text:
<style type="text/css">
.rate b {
color: red;
font-size: 8pt;
}
</style>
More
[ Text Styles ]

Size
You can change the width and/or height of the rate table:
<style type="text/css">
.rate {
width: 400px;
height: 150px;
}
</style>

Positioning
To shift the rate table left or right, or up or down a bit, you can set a margin.
<style type="text/css">
.rate {
margin-left: 100px;
margin-top: 150px;
}
</style>

Styling Submit Rating Button
To alter the submit rating button:
<style type="text/css">
.submitrating {
border: 3px double deeppink;
color: deeppink;
background: navy;
}
</style>
[ More on Buttons ]