Uh I don't know what you want to do with local/web-storage as a condition to play a sound fx.
Would be better if score occur after those Ninja destroyed (Ninja on destroyed >> add 1 to score). With your current condition the score will not store the value correctly especially when more Ninjas collide with a "color" box at the same time. Trust me I made some test!
So you can safely placing sound fx & score after 'Ninja on destroyed'. But make sure set text to score after add 1 to score, or simply separate the text action under 'every tick' condition.