The grey is my least favourite. I like the gold or the colour-changing idea. The problem with the colour-changing idea though is that it would be meaningless and leave the player wondering what it does and why it changed, since it has no functionality once they switch to Tails or Knuckles. If it changed colour and changed its passive abilities when you switched characters, then it would make sense (and be kinda neat). If only Sonic 2 provided enough for the shield passive abilities to do. Well, just running with this idea, what if: · For Sonic, it's a normal shield with the homing attack. No passive protection, not even projectiles. Just one hit of safety and the homing move. · For Tails, it's a normal shield with the ring attraction effect. Again just 1 hit of safety, and the ring attraction turns on for all characters if Tails is player 1. · For Knuckles, it's a fire shield with fire protection and projectile protection. Just an idea that makes a colour changing shield fun and meaningful. Otherwise my vote is the gold one heh.