#Main launch effect:
    (launch|deploy) %firework effects% at %locations% (with duration|timed) %number%

#%firework effect%:
    (1¦|2¦flickering |3¦trailing |4¦flickering trailing |5¦trailing flickering )%firework type% [firework] [effect] colo[u]red %colors%

    (1¦|2¦flickering |3¦trailing |4¦flickering trailing |5¦trailing flickering )%firework type% [firework] [effect] colo[u]red %colors% fad(e|ing) [to] %colors%

#%firework types%:
    ball, ball large, burst, creeper, star
 

command /fireworks:
    trigger:    
        launch flickering ball firework colored red at player's location timed 0
        wait a second
        launch trailing ball large coloured red, blue and green at player's location timed 1
        wait a second
        launch flickering trailing creeper coloured green fading to red, black and green at player's location timed 1
        wait a second
        launch trailing flickering star coloured purple and red fading to pink at player's location timed 1