User:OctoberSama/SC/style.css

.skin-theme-clientpref-day .username, .usertalk {
  text-shadow: 0 0 1.5px rgba(80, 50, 150, 0.6) !important;
}
@media (prefers-color-scheme: light) {
    .skin-theme-clientpref-os .username, .usertalk {
  text-shadow: 0 0 1.5px rgba(80, 50, 150, 0.6) !important;
    }
}