Nice! I can feel the panic of the player as they doge the enormous amout of bullets the boss is spilling out. Perhaps a bot darker, as in more base could add a more sinister effect, but overall pretty damn rad!
Chaotic. Suits Bullet Hell type games very well. Encourages much dodgeness and "GAH!!!! WALL OF BULLETS!!! SAFE ZONE! SAFE ZONE!!!! AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH!!!!"
Please contact me if you would like to use this in a project. We can discuss the details.