Remove red cursor when a enemy unit is pre-selected HELP !!

[Mouse1234]

Im making a new map called Hide and seek and I wanna if its possible to remove the red cursor when you pre-select a unit, like this picture :

 

[Pharaoh_]

Explain how the mechanics should work.
Do you want to remove the cursor itself or prevent it from flagging red?

 

[Mouse1234]

just prevent it from flagging red.

 

[Pharaoh_]

The vertex color is hardcoded, since the texture itself doesn't have a red cursor. Why don't you change the ownership of the unit to e.g. Neutral Passive?