Splat Hair Chalk in Lemon Lime (Lime Green) Give it a quick mist with your preferred hairspray to set it and wash it out with regular shampoo when finished. Neon Vibes The best thing about a stand-out hair color is that it turns any outfit into a party-ready ensemble. You could put on your favorite band t-shirt and hole-y pair of jeans, and your gorgeous green locks would make you look like you just stepped off of the runway.