效果包括去饱和度，灰度级，反转，亮度，对比度调整，色调，饱和度调整，以及浮雕，虚化等效果。
The effects supported include desaturation and grayscale, inverting, flipping, brightness and contrast adjustment, hue and saturation, embossing, blurring and much more.
图形和背景除了色调不同外，饱和度和亮度也应有区别。如果可能，应尽量避免在彩色背景上运用彩色文本。
Objects and background should vary in brightness or saturation, in addition to hue, and color text on color backgrounds should also be avoided when possible.
例如，德国的玻璃“光顶”就可控制整栋建筑的色调、亮度和温度。
For example, the glass "light roof" in Germany can control the color, light, and temperature of an entire building.
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