.header__icons a,
.header__icon {
  color: #0537fc;  /* this is default color before scroll*/
  transition: color 0.3s ease;
}

.scrolled-past-header .header__icons a,
.scrolled-past-header .header__icon {
  color: #fc0505;  /* change to your desired color on scroll */
}

.header-actions__action svg,
.header__icon svg {
  color: #0537fc;   /* this is default color before scroll*/
  transition: color 0.3s ease;
}

[data-sticky-state="active"] .header-actions__action svg,
[data-sticky-state="active"] .header__icon svg {
  color: #fc0505 !important;  /* change to your desired color on scroll */
}