77. 修改 SVG 图标颜色

[wqjiao]

我们发现 ant design 提供给我们的 icon 可以直接设置 color，但是 iconfont 网站有部分图标是无法设置颜色的，原因：
标签下的 path 固定的 fill 为某个颜色，所以无法设置

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