This function can take a single gray parameter or three parameters for RGB.

此函数可接受一个单独的灰度参数或三个 RGB 参数。

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This function can use a variety of different parameters (to define a gray value, or a Red-Green-Blue [RGB] color).

此函数可以使用各种不同的参数(来定义一个灰度值或Red - Green - Blue [rgb]颜色)。

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The fill function, which colors the text, ranges from 100 (light gray) to 218 (near black).

fill函数可用于给文本上色，范围是从100(淡灰)到218(接近于黑色)。

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Therefore, it should not be surprising that the zombie brain would look and function differently than the gray matter contained in your skull.

FORBES: Explaining the Neuroscience of the Zombie Epidemic