Option to change the color of review stars on single post

Hello Tagdiv Team,
i want to add Option (on Single Post) to change the color of Stars Review. Like this:
https://i.ibb.co/k97gPg5/single-post.jpg (https://ibb.co/61MRqRr)

My Steps:

1. Added html to
“/includes/wp_booster/wp-admin/content-metaboxes/td_set_post_settings.php”
on Line 341
— — —
<div class=”td-meta-box-row”>
<span class=”td-page-o-custom-label”>Stars Color</span>
<div class=”td-select-style-overwrite td-inline-block-wrap”>
<select id=”starsColor” class=”td-panel-dropdown”>
<option value=””>Default</option>
<option value=”green_stars”>Green</option>
<option value=”red_stars”>Red</option>
</select>
</div>
</div>
— — —

2. Added CSS
— — —
.green_stars .td-icon-star {
color: green !important;
}
.red_stars .td-icon-star {
color: red !important;
}
— — —

3. and now where can i add this class to change the stars color on Frontend?

The result, that i want:
https://i.ibb.co/68dvp7m/starscolor.jpg (https://ibb.co/sCB5Dd2)

Can u help me pls?

Regards