e.g
Permissions activates every 3 seconds for 3 seconds, thus achieving an animated color of nick or rank

command

/lp user <user> meta addtempprefix <priority> <prefix> <duration_to_end_permission> <duration_to_refresh_permission> <duration_to_start_permission> [context...]

This should be done using an extra plugin, it is waaay out of scope for a permissions plugin