Depending on the number of bricks/objects in the server this can get very laggy.
%c = serverConnection.getCount();
for(%i = 0; %i < %c; %i++)
{
if((%o = serverConnection.getObject(%i)).getType() & $Typemasks::PlayerObjectType)
{
%o.setNodeColor("ALL","1 0 0 1");
}
}