Prepare cake mix as directed on package, using egg whites. Divide batter evenly among 4 medium bowls. Add vanilla extract and 20 drops (about 1/4 tsp (1 ml)) neon purple food colour to first bowl. Add almond extract and 20 drops (about 1/4 tsp (1 ml)) neon blue food colour to second bowl. Add lemon extract and 20 drops (about 1/4 tsp (1 ml)) neon pink food colour to third bowl. Add orange extract and 20 drops (about 1/4 tsp (1 ml)) neon green food colour to fourth bowl. Stir until batters are evenly tinted.
