I want to use the dvar "cg_ScoresColor_Zombie" to change the background color of the points bar and a couple other dvars but I have no idea where I would put them. In a cfg file? In _zombiemode.gsc? Help please

in zombiemode.gsc or in a seperate script. call after zombiemode::main();

players = get_players();
for ( i = 0; i < players.size; i++ )
{
    players[ i ] setClientDvar( "DVAR HERE", 0); // second arg is the value
}

The above is for client Dvars