Use black and red color combination for this theme kitty party. Decorate the entire party hall with cutouts of devils that you can make in your home. You can use black color dupattas as drapes for the party hall decorations. Spread black and red color balloons everywhere on the party floor. You can buy artificial red horns from the local market and use them as hangings from the ceiling of your party hall. Keep your kitty hall dark and try to use candles for lightning effect.