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if (Event.SourceType == "MACRO" && Event.SourceId== "1" && Event.Action == "RUN")
 
{
  var id = GetObjectIdByParam("CAM","color","0"); //receiving the first object ID
  while (id){ //while exist the Camera objects from which black-and-white image is receiving
     SetObjectParam ("CAM", id, "color", "1"); //change the Color parameter for found object
     id = GetObjectIdByParam("CAM","color","0"); //receiving the next object ID
  }
}