These are Joomla articles used. Icons are set on or off in the Helix template
Place this in your own custom css file or in Helix custom css and change the hex color to your own.
Icon color:
.article-social-share .social-share-icon ul li a {
color: #e99b4f;
}
or
.article-social-share .social-share-icon ul li a {
color: #e99b4f;
background-color: #f7f7f7;
}
line:
.article-social-share .social-share-icon ul li a {
border: 1px solid #e99b4f;
font-size: 1rem;
border-radius: 50%;
height: 34px;
line-height: 34px;
text-align: center;
width: 34px;
display: inline-block;
}
Icons on or off in articles: System > Site Template Style >Helix> Blog > Details > Social Share Icons