我有以下svg，我想创建一个圆形滑块， 问题是我找不到与改变有关的任何东西 图像部分的笔触颜色。
<svg width="221px" height="221px" viewBox="0 0 221 221" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<pattern id="pattern" width="100%" height="100%">
<path d="M110.5,221 C171.527465,221 221,171.527465 221,110.5 C221,49.4725351 171.527465,0 110.5,0 C49.4725351,0 0,49.4725351 0,110.5 C0,171.527465 49.4725351,221 110.5,221 Z"
id="path-1"></path>
<use xlink:href="#path-1"></use>
</mask>
</pattern>
<defs>
<path d="M110.5,221 C171.527465,221 221,171.527465 221,110.5 C221,49.4725351 171.527465,0 110.5,0 C49.4725351,0 0,49.4725351 0,110.5 C0,171.527465 49.4725351,221 110.5,221 Z"
id="path-1"></path>
<mask id="mask-2" maskContentUnits="userSpaceOnUse" maskUnits="objectBoundingBox" x="0" y="0" width="221" height="221" fill="white">
<use xlink:href="#path-1"></use>
</mask>
</defs>
<g id="Final" stroke="none" stroke-width="1" fill="url(#psattern)" fill-rule="evenodd" opacity="0.69921875" stroke-dasharray="1,4">
<g id="voor" transform="translate(-77.000000, -230.000000)" stroke="#F5A623" stroke-width="48">
<g id="fi-strokes" stroke-width="48">
<g id="Gup" transform="translate(0.000000, -44.000000)">
<g id="Gup-5" transform="translate(20.000000, 111.000000)">
<g id="rp-4">
<g id="und" transform="translate(57.000000, 163.000000)">
<g id="reen">
<g id="Dl">
<g id="faded-ts">
<use id="Oval" mask="url(#mask-2)" xlink:href="#path-1"></use>
</g>
</g>
</g>
</g>
</g>
</g>
</g>
</g>
</g>
</g>
</svg>
如何将鼠标/触摸事件中的图像的一部分更改为另一种颜色？ 我尝试过：
有提示吗？