These lightning-bolt nails are subtly spooky — and we adore them! You'll need a black, neon green, and a slightly deeper green shade of nail polish. Start by painting a black base, and once that's dry, dab on the deeper green hue in a rough lightning bolt shade. Once that layer is dry, use a fine paint brush to go over the dark green sponged areas in your neon green shade. To give it extra definition, you can use a teeny amount of white nail polish to really make the bolts stand out.