Fig. 1
An innovative design for a Moon firework rocket appears in Fig.1. After the rocket reaches the desired altitude, the delay charge ignites, and that in turn triggers another ignition to jolt the needle. A reaction occurs after the needle pierces the membrane causing water to enter a glass jacket which is filled with silver nitrate and magnesium powder. Silver nitrate is an unstable oxidizer, while magnesium is a strong reducer. Farragoes from an oxidizer and a reducer always yield an explosion in a sealed container which, in this case, is the result of only a few drops of water that deliver enough energy to activate the explosive reaction. The igniting magnesium is the source of a bright flash of white light.
The chemical equation is:

In order to produce different colors and even different patterns, the glass jacket can be filled with an oxidizer -- including different combinations of gases serving as oxidizers -- a reducer, and various metal particles and metal salts for a range of colors. The gas pressure inside the glass jacket can also be adjusted so that the boiling point of the trigger liquid increases.