Firework rocket level colours

With the new Elytra/rocket behaviour shown in the latest experimental snapshot I think it would be beneficial to colour the 3 levels of rockets different colours so it is easier to differentiate between them.  Also for those with colour vision deficiency the pattern could different.  This would enable using the correct level of rocket for the correct purpose.  Level 1 rockets for flying around builds and levels 2 and 3 for longer distance travel,