In HC mode, all the background Settings will not take effect, including images and colors, so there should be specific code defined in the application for the HC mode.

在HC模式下，所有背景设置无效，包括图片和颜色。因此，应用程序中应有专门的代码处理HC模式。

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I really didn't know the answer, but using the emulator I change the background to another color, since it's just matter of Settings.

我真的不知道该怎么回答，但是使用模拟器，我可以将背景更改为另外一种颜色，因为这是一个设置方面的问题。

youdao

While we could have defined the background color, font color, and margins, we left this to the default Settings of the printing device.

尽管可以定义背景颜色、字体颜色和空白边，但是我们保持打印设备的默认设置。

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One big change to business is that sites would have to allow new users to set their privacy settings when they register, rather than having that as a background setting.

FORBES: California Bill Would Let Parents Prune Their Kids' Facebook Pages

Basic settings include a selection of colors for on-screen buttons and background colors.

FORBES: Magazine Article