Check out example codes for "how to change only bullet color in css". It will help you in understanding the concepts better.

Code Example 1

li::before {content: "•"; color: red;
  display: inline-block; width: 1em;
  margin-left: -1em}

Code Example 2

li::before {content: counter(li); color: red;
  display: inline-block; width: 1em;
  margin-left: -1em}

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