把页面的背景颜色设置为黑色。

Sets the background color of the page to black.

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更改您的前景颜色以黑色和您的背景颜色为白色。

Change your foreground color to black and your background color to white.

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更改您的前景颜色以黑色和您的背景颜色为白色。

Change your foreground color to black and your background color to white.

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