Hi there,
Entry Meta colors can be controlled in Customizer > Colors > Content.
For general styles they all fall under entry-meta so this CSS:
.entry-meta {
font-size: 15px;
/* Styles here */
}
To switch the icons to Font Awesome then this:
.cat-links:before,
.tags-links:before {
font-family: "Font Awesome 5 Free";
}
.cat-links:before {
content: "\f007"; /* Add FA Icon unicode */
}
.tags-links:before {
content: "\f007"; /* Add FA Icon unicode */
}