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Use Skin and Custom Colors.
You can control the appearance of the buttons within the applet by specifying a new skin. A skin is a GIF or JPEG file containing images for the different button in various states. The skins shown in this example and others are vailable in your SDK in the "listenup/images" folder.
<param name="skin" value="../images/16buttonSkin.jpg">
You can also specify a new foreground and background color to match your web page. Use a 6 digit hex number with 2 digits each for Red/Green/Blue. Maximum for one color is FF.
<param name="background" value="E6E3D0"> <param name="foreground" value="807060"> <param name="waveBackground" value="D0D0FF"> <param name="waveForeground" value="804080">
Here is the Applet with a White background in a colored DIV. The bevel and logo do not work well with a white background so we turned them off.
<param name="skin" value="../images/DiddlySkin1.jpg">
See more examples.