I will be honest. I'm not a big fan of the seahawks color scheme. The neon greenish color is a little too much. It looks like something out of a sci-fi movie, not something out of respected sports. What is a seahawk anyway? Any time you add “sea” to an animal, it immediately makes it less cool. Lion. Sea lion. See what I mean?
The top right design looks good, but it doesn't feature enough of the beak to make the bird design clear. The bottom left is incredibly green due to the face guard, but I actually like that. If you're going to put green anywhere, put it on the face guard sparingly. The seahawk logo is also very clear in this design. The best is the bottom right which uses a classic logo with a textured background. The textured background does just enough to modernize it.