First I would like to point out this if you fired this line:

GeSHi (eventscripts):
es est_setplayercolor 0 0 0 0 1

It would try to color a person with the userid of 0.... and it would complain an error console because of this.

ZeroSkills they are correct there is no way to properly fully invis a player the way they are asking for. And you cannot even truly remove defuser/weapons/grenades and then give them back after the invis due to removing a grenade/defuse kits leaves the model on the player's side still...

~J3ff