You can set the stroke, opacity, fill, or any of the graphic styles either at the class level or at the local level; you can even change them on the fly with a script as needed.

可以在类级别或者实例级别设置笔触、透明度、填充以及其他任何图形样式，如果需要甚至可以使用脚本随时改变。

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Any SVG property that can be applied to an element — such as fill color, stroke-width, size, and opacity — can be changed in this fashion.

任何可以应用到元素上的svg属性——如填充颜色、笔划宽度、大小和透明度——都可以以这种方式改变。

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Fill it with black, then set this layer to 80% Opacity, right-click the layer, and choose Blending Options.

用黑色填充，再将透明度设置为80%，右键点击图层选择混合选项。

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