/give @s firework_rocket{Fireworks:{Flight:3,Explosions:[{Type:1,Flicker:1,Trail:1,Colors:[I;1973019,11743532,3887386,5320730,2437522,8073150,2651799,11250603,4408131,14188952,4312372,14602026,6719955,12801229,15435844,15790320],FadeColors:[I;1973019,11743532,3887386,5320730,2437522,8073150,2651799,11250603,4408131,14188952,4312372,14602026,6719955,12801229,15435844,15790320]}]}} 64