例如，指定透明背景为0选项并用mpeg4编码将生成黑色背景色。

For example, specifying a transparent background with a 0 option and encoding in mpeg4 will produce black for the background color.

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除此之外，你当然可以改变前景色和背景色，这也支持透明。

Besides that, you can of course change ForeColor and BackColor, which also support transparency.

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GIF 文件中的一种颜色可以被指定为透明，这样，图像将具有显示它的任何网页的背景色。

One color in a GIF can be designated as transparent, so that the image will have the background color of any Web page that displays it.

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