Thanks for playing the game! I'm glad you had fun with it!
I really really like the Q and E solutions for switching color, I will definitely try it out and see how it feels. I tried to do a shift 1,2 and 3 for the shields at first, but it didn't work on all keyboards and this was the only solution I could think of on top of my head. Note to self for next jam: Play test more! Really good input regarding the controls! Thanks!